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Mary-Kate and Ashley Olsen Celebrate 29th Birthday With Amazing Hamptons Theme Party

Mary-Kate Olsen and Ashley Olsen
Mary-Kate and Ashley Olsen had an amazing theme party for their 29th birthday

You're invited… to Mary-Kate and Ashley's Summer Olympics-themed Hamptons birthday party! The twins, who famously spent their early years inviting fans to their Hawaiian Beach Party, Sleepover Party, and Mall Party, dusted off their invitations for an amazing shared 29th birthday party in the Hamptons this past weekend, complete with a theme. 

The child actresses-turned-fashion designers, who turned 29 on Saturday, June 13, celebrated their birthday at the vacation destination with a day of fun and activities. Complete with an Instagram hashtag of #OlsenOlympics, the fête split party guests into two teams: Team Mary-Kate and Team Ashley.

Happy Birthday #TeamMK #OlsenOlympics

A photo posted by Yale Breslin (@yalebreslin) on Jun 13, 2015 at 5:12pm PDT

Champions ???????? #teamashley #olsenolympics #twinning #sorrymk

A photo posted by Jared L. Seligman (@jaredseligman) on Jun 13, 2015 at 2:46pm PDT

Related: PHOTOS: Mary-Kate and Ashley Olsen Through the Years

The teams and their famous leaders competed in a variety of games including races and a dunk tank. Guests wore their allegiances on their sleeves, sporting the official shirts for the party — either a red T-shirt with "TEAM Mary-Kate" in blue-and-white lettering, or a blue T-shirt with "TEAM Ashley" in red-and-white lettering.

#OlsenOlympics

A photo posted by Yale Breslin (@yalebreslin) on Jun 13, 2015 at 1:56pm PDT

Attendees, including celebrity real estate broker Jared Seligman, magazine journalist Yale Breslin, and makeup maven Alexis Page, took to Instagram to share sweet shots of the Full House alums and their festive soirée. The Row designers, who largely stay off of social media, look happy and healthy in the photos from their special day. 

Related: PHOTOS: Stars With Twins!

One shot from Seligman implied that Ashley and her supporters came out on top, winning the day's competitions over Team Mary-Kate. The real estate agent posted a photo of himself with Mary-Kate, captioning the image, "Happy Birthday my beautiful MK. You will always be a winner in my book.. Except today #olsenolympics #werenumber1."

Happy Birthday my beautiful MK. You will always be a winner in my book.. Except today ?????? #olsenolympics #werenumber1

A photo posted by Jared L. Seligman (@jaredseligman) on Jun 13, 2015 at 6:22pm PDT

Two Cyclepaths

A photo posted by Yale Breslin (@yalebreslin) on Jun 14, 2015 at 5:17pm PDT

The Olsens found themselves back in the headlines for their recently abandoned acting careers this spring, following Netflix's announcement that the streaming service is developing a Full House spinoff, Fuller House. Though the Olsens toyed with the idea of reviving their role of Michelle Tanner, Fuller House's executive producer confirmed last month that the twins will not reunite with their sitcom stars.

While Mary-Kate and Ashley aren't turning back to the jobs that made them famous, the blonde fashion plates are seeing huge success with their second careers. Just one week after it was announced that they would not be joining Fuller House, the sisters won big at the Council of the Fashion Designers of America (CFDA) Awards, taking home the honor of Womenswear Designer of the Year Award for The Row.

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