Kim was showing off her colossal badonkadonk again on Tushday night outside Koi -- where she was anything butt coy!
Thanks, Kim, for pulling up the rear!

WHY does TMZ keep promoting this fat ass, no talent slut? What has this empty headed slut EVER done that requires any talent, skill or brains? All she's known for it getting on her knees or being on her back. She's just like pair-ASS hilton; born to wealth, and determined to use it to become the most self centered, self involved, selfish woman on planet earth. Let's move on TMZ; let's see stories about people who can actually make a difference or have earned what they have...
Big Booties may be cute when their young, but when they are over 40, it's embarrassing to always being mistaken for the liberty bell. On the positive side, there is always a shelf to put my beer.
Phil - go ahead -she'll give it up to you-she'll give it up to any given male!-shes already done half of hollywood. Just don't forget your rain gear :)
I would love to have her (or her twin) regularly. Pretty face, great ass, nice rest of body. What more is there from a physical perspective?
Keep it up, Kim!!
The funny this here is half of the people posting her LOVE Parisite Hilton!
What is she famous for?
Boning a F-List actor on camera!
I HOPE SHE HAS A LOT OF TOILET PAPER FOR THAT FAT BUTT.
I DONT MIND A BIG BUTT BUT THATS JUST TO DAMN BIG AND NOT SEXY!
You all don't think this is real do you? Betcha if pictures are looked at a year or so ago it wasn't that big. Implants for future sex videos im sure
Looks like she has a hemorrhoid cushion implanted in there. You can't say the girl isn't practical.
Anyone who thinks a well shaped behind is gross is either a jealous female or most likely a homosexual. Straight males prefer women that don't look like Nicole Ritchie and the Olsen Twins.
She's just playing it up for the camera. The same women who are on here calling her a slut don't have a problem with a shirtless Brad Pitt or Matt Mcconaughey. She's pretty and she's using what she has to get noticed. I'd rather her use her talent or brain..but she may not be able to, so more power to her.
Britney Spears might miss a lot more 'X Factor' auditions ... because she can! Simon Cowell gave Brit damn near free reign in order to sign the pop star to that $15 million deal -- but is it backfiring? We'll tell you what peeps on the set are saying.Plus, Chris Jericho's…