2013 was filled with unexpected hair reveals and shocking styles. From Jennifer Lawrence's controversial pixie cut to Miley Cyrus's high-cut leotards, celebrity fashion kept us at the edge of our seats. Some of the biggest stars have evolved so much this year, you may have forgotten what they looked like not so long ago. We've taken a walk down memory lane and uncovered what a difference a few years can make.
The Way They Were: 2013's Biggest Celebrities
The Way They Were: A Look Back at our Favorite Celebs of 2013
Miley Cyrus performs onstage during 101.3 KDWBs Jingle Ball 2013 at Xcel Energy Center in St. Paul, Minnesota.
Actress Lea Michele attends L'Oreal Paris' Women of Worth 2013 at The Pierre Hotel in New York City.
Amanda Bynes attends an appearance at Manhattan Criminal Court in New York City. Bynes is facing charges of reckless endangerment, tampering with evidence and criminal possession of marijuana in relation to her arrest.
Amanda Bynes visits Spring Awakening on Broadway, and poses with Lea Michele.
In costume of 'oiran' high-class geisha girl, US pop music star Lady Gaga look-alike doll, called Gagadoll made of silicon is displayed at a press conference in Tokyo. Lady Gaga was there for the promotion of her latest album 'ARTPOP'.
American singer Lady Gaga performs on the Other stage on the first 'official' day of the annual Glastonbury festival near Glastonbury.
Actor Tom Hanks ('Saving Mr. Banks') on 'Jimmy Kimmel Live'.
Michael J. Fox as Alex P. Keaton and Tom Hanks as Ned Donnelly on 'Family Ties'.
Carrie Underwood as Maria in 'The Sound of Music Live!'
Carrie Underwood performs on 'American Idol' Season 4.