(3 of 15) Jennifer AnistonFrom the moment Jennifer Aniston stepped onto the set of Friends, she has been a style icon—the personification of Girl Next Door. From her much-copied hairstyles to her glamorous Emmy gowns, her look has been admired and imitated by celebrities and non-celebrities alike. September, 1999 Aniston gives her style a bit of a twist (note the hair) while walking the red carpet at the51st Annual Emmy Awards in Los Angeles on September 12, 1999.