29 September 2011Photographs of American television personality Nicole Richie have sparked suggestions that the star has had breast augmentation surgery. The 30-year-old, who celebrated her birthday on September 21, was photographed last weekend relaxing on holiday in Mexico with friends including the actress and musician Juliette Lewis and British DJ Samantha Ronson.While stretching out by the pool in the resort of Los Cabos, Richie showed off her curves in a number of different bikinis. According to an article by US magazine, Richie said in 2008, while breast-feeding her son, that she didn't like having big breasts. However, it would appear The Simple Life star has had a change of heart and sources close to her say Richie hasn't been secretive about having had cosmetic surgery. One said: "In the past, she said she wanted a lift, though we never thought she was serious. "The pregnancies took a toll. She said breast-feeding killed what boobs she did have!"