Updated

Ashley Tisdale may have gone under the knife to change her nose, but she keeps her body looking good the old fashioned way: working out and eating right.

"I've found I'm definitely eating better since I started working out more rigorously," she tells Shape Magazine. "It kind of happened naturally. I don't really crave junk food that often now."

The 23-year-old "High School Musical" star shows off her curves on the January 2009 cover of Shape, where she also admits to her love of ... oh no ... carbs!

Click for photos of Ashley and the High School Musical gang.

"I love carbs," she admits. "Bread, corn bread, french fries--all that stuff."

Lucky for Ashley, she says she's always been thin - maybe a little too thin.

"I was always super thin - too skinny, actually. I felt like someone could break me in half."

Not anymore. Personal trainer Christopher Hebert has the starlet pumped.

"She really enjoys cardio, especially running stairs with a medicine ball," says Hebert.

Ouch.