Sarah's last name is unknown. She is the best friend of Flora from Winx Club, and she is the Fairy of Beauty. She isn't like Stella, though. She is kind and sweet, timid like Flora, strong like Bloom, but very determined like Layla. She isn't as powerful as Stella (who is the third most powerful Winx, Flora second, Bloom first) and is just the slightest bit over Roxy.
Sarah's Charmix is unknown, and her Enchantix is, also.