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Originally appeared on E! Online .

Margot Robbie is back in movie star Barbie mode.

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The Oscar-nominated actress made her return to the red carpet nearly a year after she and husband Tom Ackerley welcomed a baby boy , whose name has not yet been shared.

Robbie posed alongside her "A Big Bold Beautiful Journey" costar Colin Farrell as the two celebrated their upcoming romantic fantasy at the Four Seasons Hotel in Beverly Hills Aug. 20.

The 35-year-old cut a stunning figure in a black, fitted mini-dress, paired with strappy black heels and her iconic blonde hair. Colin went for a more casual look, donning blue jeans and a white t-shirt with a black cardigan.

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