On Monday night in Westwood, Britney was seen boozing it up at the W Hotel's Whiskey Blue lounge. A mole for Perez said, "[Britney] entered in a short black and white dress with long black wig." After she made it safely inside, Britney changed into her party wear: a men's style white shirt and black shorts.

Perez's source claims, "Britney was making out with a dark hair, bearded man outside in a cabana, but I could not recognize him." The bearded man was none other than Mr. Cohen, claims Hilton. After Britney and Isaac finished up at the bar, they proceeded to the hotel lobby, where Isaac purchased a room.

If you want to check out Britney's new man for yourself, his myspace page is http://www.myspace.com/hebroo.