Jessica Simpson -- who battled scrutiny for her
new curves earlier this year -- is working out again.
And she doesn't like it.
"On my way to workout with my trainer," she wrote on her
Twitter page Monday. "Every time we have to do squats, and he yells at me, 'Get lower like you're in the club!'"
Simpson, 27, then adds, "I don't squat in the club unless I am peeing!"
See photos of stars working out
A source tells Usmagazine.com Simpson is working with her longtime Mike Alexander.
See how Jessica Simpson's shape has changed
Alexander told
Fox News last month that the singer wasn't miffed at all the coverage surrounding her fuller figure.
See photos of Jessica Simpson and other stars falling down
"The whole thing wasn't as traumatic for Jessica as everyone made it out to be," he said. "She's a confident and naturally beautiful girl who works hard."