Which Celeb Has a Serious Six-Pack?

Actress shows off her abs while filming her new cheerleader TV series

Check out this actress' situation!

She was snapped on the Canadian set of her new series rocking a barely-there cheerleading uniform that shows off her taut midsection.

Think you know who this ab-tastic star is? Find out after the jump...

 

It's Ashley Tisdale, who's graduated from High School Musical to play a college cheerleader in the new CW series Hellcats.

It looks like Ash may have been doing some tumbling routines earlier by her banged-up knees.

Either way, her rockin' bod gets three cheers!