Mary-Kate & Ashley Olsen Celebrated 29th Birthday With Olympic-Themed Party

Mary-Kate and Ashley Olsen had one big 29th birthday celebration on Saturday (June 13) in the Hamptons, N.Y.

During their Olympic-themed birthday party, the twins had their guests wearing “Team Mary-Kate” and “Team Ashley” tees and competing in games, such as relay races, obstacle courses and dunk tanks.

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“Happy birthday my beautiful MK,” birthday guest Jared Seligman wrote on Instagram with a pic of himself with Mary-Kate. “You’re always a winner in my book… Except today. #olsenolympics #werenumber1.” Happy Belated Birthday Mary-Kate and Ashley!

The twins’ friend Yale Breslin added on Instagram, “Happy Birthday #TeamMK #OlsenOlympics.”