Shay Mitchell vs. Hassie Harrison Who'd You Rather?! 'Baywatch' Babes

The "Baywatch" reboot has us breaking a sweat, and this mouthwatering pic of Shay Mitchell and Hassie Harrison ain't helping the dehydration ... or the fixation! Shay, 39, and Hassie, 36, took a break from their scripts, dropped a hot BTS shot, and…