Hottest Bodies 2014

Work It! The Hottest Celebrity 'Healthies'

Fit-spiration! See the selfies Jessica Alba, Carrie Underwood, Karlie Kloss and more buff stars snap between reps

CARRIE UNDERWOOD

She's country strong! Personal trainer appointments must be going through the roof ever since Underwood's fitness guru posted a gym selfie (a.k.a. a "healthie") of the star "killin it on her pull-ups today!!"