Laverne Cox Celebrates 50 with a Poolside Bikini Parade

Laverne Cox Instagram

The birthday train continues for actress Laverne Cox, who officially celebrated 50 in style on Sunday.

Cox posted a video Instagram poolside sporting an itty bitty Fendace bikini, modeling her 50th year with a runway walk along the deck.

"50...This what it look like. Happy birthday to me," the actress wrote in the post caption.

On Thursday, Cox pre-gamed her birthday at the Moxy Hotel rooftop in New York City, showing up dressed as her newly released Barbie doll. Accompanied by one of her collectible tribute dolls, Cox walked the pink carpet in an oxblood dress with a tulle skirt and corset bodice.

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Later on, the Inventing Anna actress removed the corset top to reveal a complete silver bodysuit underneath the tulle skirt, perfectly matching her doll.

RELATED: Laverne Cox Says She's 'So Excited' About Turning 50 and No Longer 'Lying About My Age'

Cox told PEOPLE ahead of her official May 29 birthday that inspiring a doll in Mattel's legendary lineup feels "surreal."

"I can't believe it. I love her outfit," Cox said with a laugh. "What excites me most about her being out in the world is that trans young people can see her and maybe get to purchase her and play with her, and know that there's a Barbie made by Mattel, for the first time, in the likeness of a trans person."

RELATED: Laverne Cox Gets Her Own Barbie Before Her Birthday — and Calls It a 'Full-Circle' Moment

Cox, the first transgender woman of color to star in a leading role in a scripted series, Orange is the New Black, said she was heavily involved in the doll's design.

"I was like, 'Can we make her look more like me? And more African American?'" Cox recalled of feedback she gave to the creative team. "And we had a conversation about highlights and lowlights because I'm blonde most of the time now, but I'm a Black girl, so I need a dark root. And we had a whole conversation about how they can't do that, but they could do dark lowlights."

In a statement shared with PEOPLE, Lisa McKnight, Executive Vice President and Global Head of Barbie and Dolls at Mattel, said the brand "couldn't be more excited" to partner with the four-time Emmy nominated actress and Emmy-winning producer.