Drew Barrymore's post-baby slimming secret revealed

New mother Drew Barrymore, who is looking thinner after birth of her first child Olive just four months back, has revealed her slimming secret. The 37-year-old actress was seen wearing a pair of Spanx's control inner wear under a skirt, while attending the New York City Ballet's Annual Luncheon Benefit, reported Daily Mail online. At first, her long, floaty skirt, with a black-and-white tie-dye pattern, appeared to keep everything covered but as she walked, its thigh-high slit became glaringly apparent, so did her black Spanx . The curve tightening-underwear can be used to hide bumps and bulges, but it appeared that Barrymore wore hers as a kind of slip as she feared revealing too much.