Sienna Miller is a hussy

I'm really starting to think that Sienna Miller is a skank. First she broke up Jude Law's marriage, then she cheated on her own boyfriend, and now she's about to break up another marriage. Sienna was seen making out with Brothers & Sisters star Balthazar Getty on a boat recently. Oh yeah, and her boobies were flopping around with everyone watching.

Here's a trivia question: What do Sienna Miller and the Grand Canyon have in common? (Hint: the answer is inappropriate and not nice.)