Pre-Series
When Stella was younger, she had a totally different look where she wore a pair of white glasses and had some what messy hair. In "Win-X Together!", it was revealed that when she was younger she had a crush on some boy called Robby, but he had a crush on the prettiest girl in her old class, Kimberly. Stella cast a spell on Kimberly so she could not go to the school dance, but instead, Robby spent the whole night taking care of Kimberly and holding her hand, which upsets Stella. Later as time went on, Stella and a little puppy of hers were on a scavenger hunt to find a rare plant but instead, she found a special tree which leads to a secret tunnel and tied a ribbon to it so she knew which tree it was, and it became very handy for her and later, for the Winx. When Stella first went to Alfea, she accidentally destroyed the potions lab, an action that got her expelled but, readmitted.
Series
Season 1
Stella, Princess Outfit, season 1
In Season 1, Stella brought Bloom to Alfea when Bloom discovered her magical abilities. Bloom forms a team, the Winx, with four other girls, Stella, Tecna, Musa, and Flora. Together, they fought evil and brought peace and harmony to Magix. At first the three witches, Icy, Darcy, and Stormy attempted to steal Stella's ring, as they believed it had the power of the Dragon Flame. They sent a note pretending to be Brandon asking her out on a date. At last, they succeeded, by kidnapping and binding Stella and thus forcing Bloom to hand over the ring. They immediately tested the ring for its magical powers. However, they were disappointed that the ring was not as powerful as they had expected. Bloom was not the leader of the group but at times takes the role. During the period, Bloom took to adapt to the new environment, Stella offered sympathy and comfort when Bloom faced setbacks. One example was when Bloom found out Sky's real identity and was heartbroken. Stella consoled and comforted Bloom, even though she was in the same predicament. As a result, Bloom is grateful to her. Stella's relationship with the three other girls grew as they went on their missions to fight evil.
Stella later finds out that her parents are divorcing. When the Day of the Rose comes around, she lashes out at Bloom because she is so stressed about what clothes to bring to whose house for the weekend. She was still a little in denial about her parents, and very much wanted them to work it out.
The Winx started to gain deeper understanding and trust in their friends, and appreciate their friends for their different personalities. Stella and Brandon also started to be interested in each other. Initially, Stella knew Brandon as Sky, but in Episode 17, when Sky's true identity was revealed, she was horrified to realize that he had lied to her. She was devastated, just like Bloom, but she was optimistic and cheerful, and recovered from her shock.
Stella truly loved Brandon, so she accepted him as a squire. Stella aided Bloom in recovering her power when the three witches stole it to dominate the world. Eventually, Bloom recovered her powers, and Stella and the others joined the battlefield. Stella, Flora, Tecna, and Musa held off Darcy and Stormy, whereas Bloom settled a score with Icy. In the end, the Winx emerged victorious.
Season 2
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Stella earns her Charmix after admitting her own faults.
In the second season, Stella and Brandon's relationship was off to a good start, until Stella, Bloom, Brandon, Sky, and Aisha went to the Under Realm. Stella and Brandon were separated from the others. They arrived in a place called Downland. There they met Sponsus and Princess Amentia. Amentia took a real liking to Brandon, which infuriated Stella, who was weak from the lack of sunlight. After a recharge, she reunited with Bloom, Sky, and Aisha. When they rescued the Pixies, Amore saw Stella and a bond of sisterhood was born. After that, Stella was determined to get Brandon back from Amentia. Amore helped with this by putting in one of her soul mate blossoms in Amentia's bouquet. Thanks to this act, Amentia dumped Brandon for Sponsus, thus saving him from being married and bring him back to Stella.
Stella and Aisha in the Relix.
Before a big mid-term exam involving convergence, Stella had a slumber party to bond with her friends. During the party, she told her friends of her first love and her hopes of going to prom with him. Unfortunately, he liked someone else. Stella did not want that happen but by luck, the girl broke her leg. Stella rejoiced and started believing magic exists, she knew right then and there, she would be a fairy. Even with a broken leg, the girl still came to the prom and Stella’s first love took care of her the whole night, much to young Stella’s anger. During the test, Stella's contribution was giving the Winx’s avatar vision.
After passing the exam, Stella, the rest of the Winx and the Pixies went to Earth with Bloom and nearly got involved with a gang. After that incident, Stella and the other girls went to a Halloween party and got the last laugh.
Afterward, the girls and Specialists went to a resort realm and Stella showed off a brand new swimsuit that was just for show. During the trip, Stella is completely out of her element: camping. The differences between her and Aisha are very clear, causing growing conflict. The day after, Aisha suggests they send a postcard to Stella's parents, a sensitive topic for her, she brushes it off. Bloom ends up telling Aisha that her parents are divorced. Aisha, feeling guilty and also excluded again, pretends to take into the woods to cry. Having been gone for so long, Stella starts to worry about her and finds her. The two have a deep conversation which instills a better bond between them. Stella explains that she too feels out of place at times and that is why she wants Aisha to join her fashion show they were putting on for the Specialists. Because Stella admitted her own shortcomings she earns her Charmix.
She then went to the Under Realm with the other Winx and the Specialists to save Bloom from Darkar. She solved a puzzle involving colors that would allow access to Relix and therefore, save Bloom.
Season 3
Stella changed into a monster.
Stella plays a rather big part in this season. It starts off at her Princess Ball, where her father announces he will be remarrying. The bride-to-be is the wicked Countess Cassandra along with her daughter, Chimera. With the help of Valtor, Cassandra puts King Radius under a spell. At her Princess Ball, Stella is spelled herself by Chimera, turning her into a hideous beast and under the influence of Cassandra, her father refuses to recognize her as his daughter. But the Winx girls manage to break the spell and turn Stella back to normal.
Stella earns her Enchantix by saving her father from a dragon during the thousand-year anniversary of the Kingdom of Eraklyon after Diaspro tricks Sky into drinking a love potion given to her by Valtor. She later breaks Diaspro's hold on Sky with the use of her newly acquired Fairy Dust.
Stella later breaks Cassandra's hold on her father by storming in their wedding ceremony, thus freeing her kingdom and regaining her rightful place as the Princess of Solaria.
During Bloom's quest to defeat Valtor and save her parents, Stella is ever faithful and supportive and always willing to help. During this season, Stella and Brandon's relationship grows as well.
Season 4
Stella appears in Season 4 with the rest of the Winx as they travel to Earth to find the last fairy of Earth. Where the Winx open their store, Love & Pet, Stella is in charge of their grooming and clothing. When the boys come to Earth to watch over the girls, Bloom's Earth rival, Mitzi, gets a crush on Brandon and is determined to make him hers. This infuriates Stella and causes her to constantly question Brandon's loyalty since Mitzi constantly follows him around.
Season 5
Stella is once again seen with the Winx. In "The Lilo", Stella is seen helping the Winx save the Lilo flower and defeating the Trix. In Episode 2, the Winx including Stella come to promote their concert at the Frutti Music Bar. She is then seen watching the Royal Crowning Ceremony and then flying off to the save Gardenia's beach from the oil spill with the Winx.
Stella and Illiris bonding
She is also seen annoyed when Miss Faragonda told them that they must acquire the Sirenix power, in order to defeat Tritannus. In "The Shimmering Shells", Stella, along with Aisha and Bloom, travels through the ocean in her Harmonix.
Stella and Illiris
Stella also meets a selkie named, Illiris and bonds with her.
She also later put on a fashion show, but her attempts were ruined as the other students lost interest. She tried to ask her Guardian of Sirenix about an opinion, but her Guardian gets annoyed for being summoned for something as simple as a fashion show. While trying to find some clothes and jewelry, Stella touches a spell and turns into a little kid and her personality changes as well. The spell later wears off.
Stella, along with the rest of the Winx, acquired Sirenix in "Sirenix," and entered the Infinite Ocean along with their Selkies. In "The Pillar of Light," her father becomes ill after the seal from the Pillar of Light was taken by Tritannus, causing an eclipse throughout the Magic Dimension.
Season 6
Stella and the other girls (minus Bloom) arrived at Domino along with the Specialists for Domino's party, which is for Daphne's revival. They helped Daphne get ready for the party.
At the party, the Trix interrupted and summoned a creature, The Beast of the Depths, which then attacks the guests and everyone at the event. The Winx try to defeat it using their Sirenix powers, but failed and discovered that only Daphne can command it to leave Domino. Daphne has lost her confidence, so the Winx leave and try to find the "Inspiration of Sirenix" in Lake Roccaluce, which the Sirenix Guardians said it can make inspire Daphne to believe she still has her powers. The Winx later discover that they are the Inspiration and quickly leaves, but are blocked by the Trix, though Stella and the girls managed to defeat them easily and leave.
Back at the Domino palace, the Winx manage to inspire Daphne, making her transform and drive the creature away. The Winx and the rest of the party celebrate, and Stella and the girls flew up in the air and decorate it with their Sirenix powers.
In "The Legendarium", it is revealed that Stella is opening a fashion boutique (Stella's couture) at Alfea. She had designed new outfits for the Winx.
During Faragonda's anniversary party, the fairies and pixies celebrate, but not long after that, the pixies got a call, that the Pixie Village is attacked by the Gloomy Wood Trolls. The Winx and the Pixies leave Alfea and defend the village. However, after a while, the trolls along with the pixies around them disappear. When coming back to Alfea, the Winx found a crow.
Stella's Linphea Outfit
In the third episode, Stella and the Winx go to Linphea College, where they watch the Specialists' and Paladins' training. After a while, treants came and attacked the school. Upon feeling the dark magical energy from Cloud Tower, the Winx go there and fight the witches and the Trix. They found out that the energy came from Selina and the Legendarium. They tried to attack them, but failed and caused their powers to be gone. However, Bloom still has her power and give parts of the Dragon Flame's magic to the Winx to give them strength.
Other things coming soon...
Season 7
Season 8
Movies
The Secret of the Lost Kingdom
Stella as seen in the first movie
In the movie, Stella along with the others helped Bloom in finding her parents. When the Winx and the Specialists found the Book of Fate in a secret library on Domino she was quite interested in seeing Bloom's baby pictures when one of them popped up, but Bartleby told her otherwise. She is engrossed in seeing Bloom's baby pictures kept in the secret library of Domino.
Magical Adventure
Stella as shown in Magical Adventure
In the movie, Stella's last name is revealed to be Star when Icy attacks her, and the Winx (minus Bloom) face the Trix at Alfea. Afterwards, she soon discovers that Bloom is engaged to Sky on a reality TV show, she then tells the Winx, who all agree to go to Domino.
They arrive at Domino to find a heartbroken Bloom, who is recently just dealing with a broken heart after Sky tells her that they cannot get married.
After being at Domino, the Winx teleport to Gardenia, they collapse and then wake up to find out their magic is gone. So they are then forced with the task to stay in Gardenia until they get their powers back.
The Winx then head to Havram to look for clues to get their powers back, which they do and then are forced to fight the Trix who they defeat.
The Mystery of the Abyss
She was first screaming and then walking down the steps and the Winx laughed at her and bragging on fashion style. Griselda showed up and told the Winx to report to Alfea's Central Courtyard to greet the new students. Stella talks about Griselda in a mean way and all of the recent events when they see her.
Specials
The Fate of Bloom
Stella in Nickelodeon's One-Hour Special
Stella meets Bloom the same way she does in Season 1 and retains her same personality. The only difference is a redesign of her princess outfit, her normal clothes, her scepter and her ring. She calls herself the "Fairy of the Shining Sun," instead of the Fairy of the Sun and Moon. Another difference is her outfit looks similar to her Enchantix clothing.
Stella first appears in the dorm when she arrives, the gang later go off to Magix to get something to eat. But when they do, Bloom is talking to her mom (Knut appears and then Bloom follows him). So the Winx then go help her but the Trix are already attacking her so they transform, but are too weak so Stella teleports them back to Alfea.
Stella is then talking to Griselda and Headmistress Faragonda, who are saying that they will take their magical powers until the return from their trip. Stella and the Winx later find out that the Trix are at Alfea and will be there to take the Dragon's Flame, so they have to fight a monster, that the Trix conjured, and later when Ms. Faragonda arrives and stops the Trix's monster and talks to them and then sends them back to Cloud Tower, Ms. Faragonda then gives the Winx their magic back.
Revenge of the Trix
Stella used her powers to guide the Winx to Bloom, who is lost somewhere in the forest outside Alfea.
The Battle for Magix
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Bloom and Stella in the Battle for Magix.
She picked up Bloom after she lost her powers to the Trix. She later joined her, Sky, Brandon and Knut to journey to Cloud Tower to confront the Trix.She then escaped with Riven, Knut , Brandon and the Cloud Tower students and Miss Griffin to Alfea via Vorpal Tunnel. She joined in the final battle with the rest of the Winx to fight Darcy and Stormy while Bloom and Icy went mano-a-mano. She along with Flora, Musa and Tecna used Stormy's own cyclone to knock her and Darcy out. Later, she celebrated with her friends and boyfriend.
The Shadow Phoenix
Stella is seen talking to Brandon about what she would do for punishment of the Trix. She later accompanies Aisha and Bloom to Lord Darkar's Castle. Stella goes with the rest of the Winx to go with Professor Avalon to the opening of Red Fountain. Stella goes with the rest of the Winx and the Specialists to stop Dark Bloom and Lord Darkar to accessing the Realm of Relix. Stella is later shown at a party.