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The noncolor tankini kind of sucks energy out of Erika, and the horizontally ribbed fabric isn't flattering. A glamorous red strapless, in contrast, has a zigzag texture that makes her look curvier; an excellent built-in bra lets her feel totally secure. "This suit is cut to define my waist and accent my shoulders," she says. "And I appreciate the extra coverage on the hips." Lycra strapless one-piece, $180, Gottex.