Maryna Linchuk

Forget supermodel butt washer ... there's a new best job in the world ... SUPERMODEL BOOB HOLDER. And just in time too -- Maryna Linchuk nearly suffered a wardrobe emergency on the beach over the weekend in St. Barts ... stripping out of her bikini and into another outfit ... and her loyal…

Hold the phone -- here's 25-year-old Victoria's Secret model Maryna Linchuk squeezing her smoking hot lady bits into a skimpy pink bikini yesterday in Miami. We hear it's snowing somewhere right now.