Welcome, ladies, to the one, the only Battle of the Bathing Suits. In this corner, we have B. Kini, known for lethal nip slips and killer wedgies. Here comes the challenger, Old One-Piece, ready to bore its opponents to death. Oh, what’s this? A third contender? Why, yes! It’s Geronimo. This new collection out of L.A. looks ready to rumble — in a retro bombshell kinda of way. After training at Rodarte and honing her chops dressing musician Jenny Lewis for the stage, designer Jenny Reyes has put her modern spin on vintage shapes for sexy swim pieces that don’t bare it all — like plaid halter tops and groovy floral briefs. And she’s got the dry goods to back her up: The high-waisted gabardine Oui short shorts, hand-painted racer-back Noni vest, and strap-happy Tamsin skirt pack extra punch. We’re betting on a knockout. Available online at geronimocollection.com.