Jessica Simpson is on diet!

The 28-year-old singing star Jessica Simpson was worried about her expanding waistline, so she re-hired former trainer Mike Alexander to make sure that she sticks to a strict new 1,250-calorie-a-day regimen. Simpson has become a hot topicafter debuting a fuller figure at a concert in Florida last month.

"She just can't resist junk food," a Star Magazine insider explains. "She literally needs to be watched 24/7.""Jessica has a problem with binge eating, which is usually triggered by stress...""Jessica's most recent violation was indulging in the terrible trio of chicken wings, nachos, and booze at the Great Dane Pub in Madison Wisconsin."

I guess we are not going to see many of these pictures again, lol. Here is Jessica Simpson and Tony Romo leaving Da Silvano restaurant in New York.