Paris Hilton apologized to Kim Kardashian after dissing the reality TV star’s brilliant backside on live radio.  When asked during an interview if she would ever swap butts with the former Playboy spank-poster princess, Hilton declined, describing Kardashian’s dumper as “cottage cheese inside a big trash bag.”  She then added, “It’s gross.”

When blogtastic socialite Perez Hilton went public with the transcript from the radio interview on his Web site Monday, Paris was mortified (read: caught being a two-timing whore) and has since apologized to Kardashian.

Hilton tells In Touch, “I was just joking around and I made a stupid joke. I felt really bad afterward, so I contacted Kim and apologized. It was a silly thing to say. Kim’s hot!”

I'd dip my carrot in that cottage cheese!

Kardashian confirmed Hilton’s apologize, adding, “Paris and I have been friends since we were kids, and I’m glad she made the effort to say she’s sorry.”  

It makes sense that Paris would hate on Kim for having a bubble butt.  Paris has less ass than the 4th graders that hang out at the mall food court.