This Barbie is a bridesmaid.

Margot Robbie wore a plunging light yellow silk gown while serving as a bridesmaid in her friend Britt Claxton’s elegant beach wedding in her native Queensland, Australia on Friday.

Robbie, 33, matched the other members of the bridal party in the chic, silk halter dress that cinched at the waist.

Robbie was seen smiling and laughing with the bride — who wore a square-necked wedding gown with a high slit and white pointed-toe shoes — and her friends and family.

She also joined the bridesmaids in walking down the aisle during the ceremony and in a fun dance moment during the elegant reception that followed.