Miss Universe 2012 : Olivia Culpo US contestant

Olivia Culpo beat out 88 other beauty queens to take the title from Leila Lopes of Angola during the two-hour competition at the Planet Hollywood casino on the Las Vegas Strip.

Q&A - What is something you have done that you would never do again?

Olivia Culpo answer : "I'd like to start off by saying that every experience no matter what it is, good or bad, you'll learn from it. That's just life," she said. "But something I've done I've regretted is probably picking on my siblings growing up, because you appreciate them so much more as you grow older."

It is the first win for an American woman since 1997, when the title was won by Brook Lee.