Lily Potter (née Evans) is the mother of Harry Potter. She is described as being very pretty, with startlingly green almond-shaped eyes and thick, long, dark auburn hair. She is one of the "all-time favorite students" of star collector Horace Slughorn, who describes her as "vivacious", "charming", "cheeky", and "very funny" and recalls that he "often told her she should have been in Slytherin". In addition, Slughorn says Lily is one of the brightest students he ever taught, with a natural and intuitive ability at Potions. Rowling describes Lily as being "a bit of a catch"; she was a popular girl for whom many boys had romantic feelings. Although Lily is Muggle-born, she is an extremely gifted witch at the top of her class. She became Head Girl in her seventh year. Lily's sister Petunia Dursley despised her for being a witch and viewed her as a "freak", although Petunia is later revealed to have been envious of her abilities. Rowling stated that Lily did receive warning letters for testing the limits of the Statute of Secrecy. Lily's Patronus is a doe, presumably to pair with James' Animagus shape of a stag (also the form of Harry's Patronus).