Katy Perry is soaking up the summer! News broke a few weeks ago that the pop star called off her engagement to Orlando Bloom - putting a real downer on the sunny season. Despite sparking romance rumors with former Canadian Prime Minister Justin Trudeau, that spark has already started to fade, too. Sux! Now, she's totally single - and ain't afraid to flaunt what she's got! During a break from her Lifetimes Tour while in Tampa, Florida, the performer took a dip in the ocean in a teeny tiny black bikini with white trimming - tryna make Orlando regret walking away, eh? We bet it's working!! Relate...