Christina Aguilera has denied rumors she is set to bare all in a post-pregnancy spread for Playboy magazine.The 27-year-old — who gave birth to her first child, son Max, in January – was reportedly approached by editor-in-chief Hugh Hefner for a saucy shoot in an upcoming issue of the men’s magazine.But a representative for the singer has confirmed the report is “false,” although a close friend of the star admits Aguilera is “flattered” to be approached.The pal tells OK! magazine, “That was old Christina; Christina circa four years ago. She’s looking to reinvent herself and grow.”She wouldn’t consider it but she finds it flattering to be offered at all.”