India, July 1 -- When Spanx is on sale, we don't mess around. The brand has so many flattering, versatile staples worth shopping, from shapewear and loungewear, to office looks and date-night dresses. Plus, most of the items can be worn from season to season (talk about getting a good bang for your buck).

With Fourth of July sales popping up left and right, we're turning our attention to the best Spanx deals. Now's your chance to grab a closet's worth of sleek, sculpting essentials, like the SpanxShape Booty Boost leggings for $44 off, and the SpanxSmooth Jersey Crewneck T-Shirt for $30 off. We shopped around to find the 20 best markdowns on the Oprah-approved brand for you to snap them up before your size sells out.

Best Pants Deals S...