Rumer Willis Sexy Butt PicsRumer Willis sure has no qualms about showing off her tatted and lean body.

The 24 year old daughter of Bruce Willis and Demi Moore, was seen having a fun filled vacation in Cancun, while looking great in her strappy bikini's.  Rumer was photographed guzzling champagne right out of the bottle (now that's class) and chain smoking.  She was also seen hanging out with, and hugging up on, her ex father-in-law Ashton Kutcher's buddy Wilmer Valderrama.

Which is kind of creepy, but creepy and Wilmer go hand and in hand.

Rumer, who distanced herself from her mother after Demi and Ashton separated, is said to be having a hard time with Ashton dating Mila Kunis, who is a long-time friend.  I wonder if this will get Rumer to connect with her mom again?

If Rumer was upset about anything though, she sure wasn't showing it while taking a dip in a flimsy black bikini and partying at the Hard Rock Hotel resort while in Mexico.  The champagne chugging party girl tweeted (of course) about her fun times as well; 'Coco Bongo Madness' and 'Cancun what can you do?'

Apparently Cancun can get you drunk enough to tweet incomplete sentences.  Party on Rumer, party on.

TELL US- DO YOU THINK RUMER PULLED OFF THE TINY BIKINI LOOK?