9.Mandy Moore posted this photo of herself getting ~glammed up~ as a kid.
10.Angela Kinsey shared this behind-the-scenes photo of herself on the set of the office with co-star Jenna Fischer — while John Krasinski chilled in the background.
11.Naomi Campbell posted this iconic photo of herself — with fellow supermodels Stephanie Seymour, Cindy Crawford, Tatjana Patitz, and Christy Turlington — in honor of her late friend, photographer Herb Ritts.
12.And finally, Chelsea Clinton shared this photo of herself with her dad, Bill Clinton (of course), in honor of his milestone birthday.