Usher did some last-minute shopping at the Andrew Buckler store in Soho for his protégé, Justin Bieber. The singer browsed and left with a sweater, jeans and a shirt from the men’s shop just two days before Christmas. “He told the staff he was shopping for Justin,”said a source. “He was talking about Bieber’s clothing size to make sure he would get the right fit for him.” No word on how much he spent, but Usher was rather generous on Bieber’s 16th birthday in March, when he gave the young pop star a Range Rover.