Nova

Nova is a fairy at Alfea from Solaria. Her first appearance is in Episode 4 of Season 3. She is from Solaria, the same realm as Stella. She helps fill in the news for Stella and tells her the latest rumor for Solaria. When the Winx went to Andros to slow Valtor's takeover of the realm Nova helped Stella cover up for them.

Nova also helps Stella and the Winx Club to sneak into King Radius's wedding by suggesting they impersonate the flying biker troop.

Season 3
Nova's first appearance was Episode 4 Season 3. She and Stella both from Solaria have a very close friendship. Nova seems very in tune with her home planet and she usually keeps Stella updated news and rumor from Solaria.

She appears again when the Winx goes to Andros and Stella stays behind. Nova helps her cover for the other Winx girls.

Her latest appearance was in Episode 19 of Season 3, when she helps Stella and the Winx prevent the wedding between King Radius and Countess Cassandra. She suggests that they could impersonate the flying biker troop.

Fairy
Nova's fairy form, shown in a Russian book titled I Want to Be a Fairy, and possibly elsewhere, consists of an orange tube top, a matching miniskirt with slits up the sides, and red boots with gray accents. On her arms are shoulder-length fingerless gloves, and hanging from her skirt are several red ribbons. Her hair remains the same, and her wings are orange outlined in yellow.

Civilian
Nova was seen wearing a light colored T-shirt with a pinkish crown on it, underneath a pale minty-blue jacket worn open with dark blue at the collar/neck, and ends of sleeves with stars printed along it. She also has on below the knee pale colored pants, and matching boots.

Trivia

 * Another minor Alfea fairy, Miky, is seen in the exact same fairy outfit (and fairy pose) as Nova. This appears to be yet another character error.