Some people think Fergie had breast implants. If the star had plastic surgery to increase the size of her breasts then it would have been conservative cosmetic surgery. Fergie has naturally large breasts to begin with. Fergie's never been shy about getting plastic surgery in the past. She's had a nose job, Botox, and a possible face lift. In Fergie's before and after photos it looks like she may of had a boob job. It's a bit hard to tell though.