The Hills' Kristin Cavallari: Drug Accusation Is "Crazy"

Reality-show starlet says she laughed when costars confronted her about partying too much

Kristin Cavallari may be thinking about giving it another romantic go with Brody Jenner, but right now she is absolutely, positively single.

"I'm not dating anyone!" The Hills starlet tells us. "It's hard to meet people in L.A. And if I get serious with someone, I don't want to put them on the show."

OK, so what about recent reports of her spending time with Paris Hilton and Lauren Conrad's ex-boyfriend, Doug Reinhardt, at Coachella?

"I've known Doug since I was 15 years old," Cavallari laughed. "Yeah, I saw him there, but not like that. I'm not going to live my life off of stupid tabloid rumors and stuff…We've been friends for almost 10 years, so am I going to ignore him because I'm worried what people are going to say? No!" (FYI: Reinhardt was spotted by E! News on a date Saturday at Lemonade in L.A. with Texan pharmaceutical sales rep Whitney Eckhert.)

And that's not the only thing she's saying no to these days. Read on to find out what she has to say about that drug thing, plus why we haven't seen her—yet!—on Dancing With the Stars.

In the first episode of the Hills' maybe-final season, Audrina Patridge, Stephanie Pratt and Lo Bosworth confront Cavallari about what they think may be a problem with too much partying.

"I went out in Miami and for Super Bowl and had a good time," Cavallari explained. "I'm allowed to do that. But the fact that these girls accuse me of doing drugs, which, by the way, when they bring it up, it's so out of left field. I mean, I think I started laughing…For them to even accuse me of that is so crazy, but it is what it is."

Even so, Cavallari doesn't regret returning to The Hills one bit: "I've had such a great time and it's been great on so many different levels."

In other Cavallari reality television news, she says Dancing With the Stars has come calling. "A few different seasons," she said. "I don't think I could do it. I have a serious fear of public speaking, let along dancing in front of all those people. I think I'd be a nervous wreck."

Strutting around in a Gucci bikini is a much different story. Ms. Cavallari showed off her very fine bod in Las Vegas, where she hosted Saturday afternoon at Aria Resort & Casino's Liquid Pool Lounge.

She certainly wouldn't have any problems fitting into those skimpy Dancing costumes.

—Additional reporting by Whitney English