Kristin Cavallari is always up for having a good time, but it sounds like it's getting out of hand. It's one thing to throw back a few drinks, but according to Us Magazine, she is a cocaine addict and needs to enter rehab.

Sources say Kristin was wasted during the Super Bowl weekend and she was "going around to everyone, asking them to score her some coke." Yeah, that will keep your dirty little secret under wraps! Apparently Brody Jenner, Audrina Patridge, Lo Bosworth and Stephanie Pratt have urged Kristin to go to rehab but she doesn't think she has a problem.

"Her issues are becoming apparent to everyone. She's getting scary-thin and not showering regularly. She's clearly unhealthy. She doesn't think she has a problem."

Another source says her drug problem even became an "unavoidable conversation topic on film" and if MTV decides to use the footage, it will become clear to everyone that she needs help.

I've known a few folks who have gone down a horrible path of drug use and none of them realized how bad their addiction was until they had lost everything they owned and were pretty much put on the streets. Hopefully Kristin will seek the help she needs before it gets to that point!