File:PandP; Chelsea saves Austin from Brooke.jpg

At an auction to save the manatees organized by Ally, Brooke bid for the grand prize -- a date Austin himself. She is convinced she has won him forever until a beautiful brunette named Chelsea places a bid that nobody can beat, in the episode "Princesses & Prizes." Swiped from my DVD copy of "Austin & Ally: Chasing the Beat."