Karlie Kloss Turns 20 Today [Updated]

Happy birthday! Photo: Mike Coppola/Getty Images

In case realizing that many of the Olympic athletes were born in the nineties hasn't made you feel old and unaccomplished enough, it's Karlie Kloss's 20th birthday! According to her Twitter feed, she's spending it in Denmark. Update: It's also Jourdan Dunn's birthday! (She's 22.) And Ryan Lochte's! (28.) Cake all around!