Jennifer Lopez in a swimsuit

Jennifer Lopez is celebrating her big day in her birthday suit — her favorite one-piece, that is.

The seemingly ageless multihyphenate rang in her 55th birthday on Wednesday, posting a mirror selfie while modeling Gooseberry Intimates’ So Chic One-Piece Swimsuit ($99) in bright white.

“This Is Me…Now,” J.Lo captioned the sultry snap.

She’s owned the plunging maillot since at least 2020, when she wore it in another Instagram post.

Gooseberry Intimates

And just last month, we spotted the singer soaking up some sun on a boat in Italy, wearing the tried-and-true design with the same hoop earrings she sported in her birthday selfie.

She’s far from the only celebrity obsessed with the swimsuit, as Blake Lively, Khloé Kardashian, Kendall Jenner, Kaia Gerber and Eva Longoria all own the coastal style sensation.

And Sydney Sweeney just might give Lopez a run for her money with her extensive Gooseberry collection; she’s worn the low-cut one-piece in at least three colors.

Jennifer Lopez

Lopez first posed in the suit in 2020.Instagram

Lopez’s latest selfie isn’t the first time she’s made a splash with her summer style this year; the pop star’s been showing off a series of Nancy Meyers-worthy looks in the Hamptons lately, with her sartorial staples ranging from Jennifer Fisher hoop earrings ($180) to a pair of Allbirds Tree Flyers ($160).

And on Sunday, she got a head start on celebrating her birthday with a brunch in Bridgehampton, donning a festive floral Zimmermann crop top matching belted shorts for the occasion.

While she was joined by her longtime manager, Benny Medina, her 16-year-old twins, Max and Emme, and sister Lynda, husband Ben Affleck was nowhere in sight; as Page Six exclusively reported earlier in July, the pair’s marriage has been “over for months.”