Elizabeth, 27, recently opened up to ET about how the 29-year-old twins guided her when she decided to follow in their footsteps and pursue a career in acting.
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Video: The Olsen Twins Play an Awkward Game of 'Her or Me' The two went public when she stepped out with him at Philip Seymour Hoffman's funeral in February -- Miller was close friends with the late actor, directing him in .
On Sunday, the couple was snapped leaving her New York City apartment, Olsen going makeup-free and Miller looking casual in jeans and a t-shirt.
The winner was Team Ashley, revealed one party guest.
Despite the Olsen twins‘ birthday party fun, the sisters have experienced challenges through the years, reported the when they were only six-months-old.
News their family planned to get together for Thanksgiving."It's gonna be a family thing," she said, speaking after the announcement of the Film Independent Spirit Awards nominations.
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The Olsen twin sisters decided that turning 29 gave them a real reason to get fit and have fun with their favorite posh party pals, revealed the .
Held in the ultra-chic Hamptons, the celebration ranged from an obstacle course to a dunk tank.