Katy Perry [1] is hands down one of the sexiest, most daring celebrities out there. Between countless iconic outfits [2], seductive music videos [3], and that bikini bod [4], the pop princess has been making us sweat since "I Kissed a Girl." All it takes to confirm this is a trip down memory lane, or rather, Perry's Instagram account. Spot every flirty pout and hot getup as we recount Katy Perry's sexiest Instagram shots of all time (so far).