Jessica Simpson weight loss the big surprise at Ken Paves' birthday bash

Jessica Simpson's weight loss comes after breakup to Dallas Cow-
boys QB, Tony Romo. Photo Source: 

Lose the boy, lose the weight. It's a known-fact that coupled-up lovers pack on pounds just like the Freshman 15 and since Jessica Simpson's split from Dallas Cowboy QB, Tony Romo, the proof is in the pudding.

Last Wednesday, Simpson left guest at hairstylists' Ken Paves' birthday bash surprised by her new physique.

Party go'ers flocked to Beso in Hollywood and reported Simpson's weight loss and her "tipsy" nature after just a couple of drinks.

The New York Post quoted a source as saying, “She didn’t eat much, because she’s been dieting since her split from Tony Romo."

Word from the Simpson camp said she was just "celebrating". And as for her in the very near future plans? Simpson's rep said, "Now she’s getting ready to leave the country to film her docu-series for VH1.”