Months after having her son, Jaime Pressly attributed much of her weight loss to the Cabbage Soup Diet. A year later, the My Name is Earl actress gave most of the credit for her awesome body to chasing her active son, Dezi James, around.

Now, Pressly is on the cover of Shape magazine's March issue and there's no denying that a rocking body like Pressly's comes from anything other than old-fashioned exercise and good nutrition. Pressly says she focused on a healthy diet and did both cardio and strength training.

Her healthy habits helped her shed the 42 pounds she gained during pregnancy. (She gave birth to her son in May 2007.) Pressly said, "Sure, I wanted to lose my baby weight, but I didn't want to lose my butt! I think it's sexy when women have shapely bodies."

What else does Pressly love about her body? "Lately I love my stomach," says Pressly, "After growing a human being inside me, there is nothing more incredible or sexy!"