Lance Armstrong's Mystery Blonde Revealed!

Lance & new gal-pal Kim Strother at Marquee on Thursday. (Paul Hawthorne/Starpix)

While Lance Armstrong has recently been spending oodles of time with pint-sized moppet Ashley Olsen, the Tour de France champ was photographed getting cozy with a different blonde beauty at last night's NASCAR Nextel Party at NYC hot spot Marquee — and OK! can now tell you all about her.

The blonde in question is none other than Kim Strother, who sources tell OK! is a 30-something fitness model with the Ford Agency. And, according to onlookers at the party, it was more than just chitchat going on between the cute couple.

"They were all over each other in Marquee sitting in the banquette," one partygoer reveals to OK!. "They were completely into each other the whole time. I didn't see them kissing, but she was sitting on his lap at one point and being very affectionate."

It's believed that Lance and Kim, who has a strong resemblance to two of Lance's recent exes — Sheryl Crow and Tory Burch — exited the club together around 3:45 a.m.

By Alisandra Puliti