A few months ago, we marveled at how tiny Kristin Cavallari is now compared to past photos of her with more meat on her bones. She's super-duper skinny, and it's possible that an unhealthy habit may be causing her weight loss.

First, there were reports that The Hills star was searching for drugs at the Super Bowl in Miami. “She was going around to everyone, asking them to score her some coke," a source had told Us Weekly.

And now, friends of Cavallari say they saw her getting a little too wild again at Coachella just a few weeks ago.

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One acquaintance tells Us Weekly that during the concert weekend, Cavallari "was drinking and partying. I saw her do a line of cocaine."

"The dudes she hangs out with are all party promoters," says another source, "and they’re party animals."

Cavallari's lawyers have denied all of these drug allegations, but the evidence is mounting. You can't drink and party as much as The Hills cast members do without it showing (hello, we all remember our "freshman 15," and it wasn't from the dorm food). And Cavallari now has that skinny frame that looks like it wasn't achieved in a gym.

What do you think is going on with Kristin? (UsMagazine)

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