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What's the best way to hide a less-than-flat tummy?

One word: shapewear. “It smooths and reshapes, but also helps you stand taller,” Bloch says. “Shapewear makes you more conscious of your posture.”

Invest in a high-waisted shaping bike short, Chavez advises: “It’s one-stop shopping—for the stomach, hips, thighs.” It’s also important, she adds, to not buy clothes that are too fitted in that area: “Go up a size, then have them tailored to your dimensions so they fit you perfectly.”

Next: What should you wear on top of your slimming underthings?