Scale back carbs and salty foods for two to three days before you slip into a bikini, says N.Y.C. nutritionist Cynthia Sass. Also, replace gas-producing vegetables like beans, onions and broccoli with cooked asparagus, spinach, celery and tomatoes, which are diuretics. Double your bloat-reducing efforts by taking supplements (such as Tummy Tuck Sticks by Rodial, $60/14; beauty.com
) that include natural ingredients like seeds and green clay, which minimize gas.