Bebe Stevens is one of the female studnets at South Park elementary and is Wendy's best friend. She's pretty much the only other girl student with speaking parts so you should know her. Plus she was the first girl to get boobs and they destroyed society.
Bebe: I want a Starvin' Marvin!
Pip: Yes! I'll pay $50 for one!
Bebe: I'd want a pot-bellied elephant.
Pip: Yes! I'd pay $50 for one!