In the days leading up to Jessica Simpson's 29th birthday, the singer excitedly Twittered back and forth with two friends, actress Emmy Rossum and stylist Nicole Chavez, about how they would dress for her July 10 Barbie-themed bash. Then
Jess wrote that the much-anticipated shindig never took place. Why?

Because there was no longer a Ken to Jess' Barbie. Her longtime beau Tony Romo, 29, broke up with her just one day before her party, according to a friend. "He was acting like a single guy before he ever made it official," says the friend. "She's pretty sad."

For more on Jessica and Tony's breakup, pick up this week's issue of Life & Style, on newsstands now!

Photo Credit: INF Photo