Credit: SammiSweetheart.com/Twitter Photo: Sammi Sweetheart vs. JWOWW: Who Is Sexier in Gym Clothes?

When going to the gym, some people go for sweats and a T-shirt while others look their sexiest in sports bras and form-fitting bottoms. Naturally, the gorgeous girls of Jersey Shore go for the latter, rockin’ skin-tight attire when they hit the treadmill, and they all look incredible.

Sammi Sweetheart and JWOWW have undergone big transformations through the years, and lately, they’re looking hotter than ever!

Though she wasn’t working out when modeling for this photoshoot, Sam has her own fitness clothing line and looked super patriotic in a heart-embellished white sports bra and navy blue pants with a white and red waistband.

JWOWW, on the other hand, went for a simple black look, wearing a matching sports bra and tight yoga pants with purple accents. However, her crazy abs are at the center of the photo — which she took for her fiancé, Roger, natch — and definitely complement her look.

But who looks sexier in their gym clothes? We’ll hand it over to you — vote below!