What kind of cosmetic surgery has Julie Andrews have had?

Julie Andrews has never had cosmetic surgery. However, she did have surgery on her vocal cords in 1997 to remove noncancerous nodules (although she later stated that she never had any cancer or nodules, but just muscular striation on her vocal muscles due to straining them during Victor/Victoria). Unfortunately, the surgery failed and she almost completely lost her singing voice and never regained it.