Pakistan, July 4 -- Hilary Duff has responded to criticism of her tour wardrobe in the most understated way possible, by liking the post of a fan who clapped back on her behalf. The singer is currently midway through her Lucky Me Tour across the US, which kicked off on 22 June in West Palm Beach, Florida. When a critic posted that Duff "obviously didn't spend any money on her wardrobe" and accused her of wearing sweatpants on stage, a concertgoer stepped in with receipts. "Actually she's a baddie that did five quick outfit changes during her performance," the fan wrote, sharing clips of Duff moving through a slip dress over jeans, a fringe crop top, a satiny white dress and a sequin halter top. Duff, 38, signaled her appreciation by likin...