Serena Williams is expecting baby No. 2—and she made the big announcement at the 2023 Met Gala.

The tennis star revealed the happy news on Instagram prior to walking the red carpet, in a post featuring photos of her in her elegant Gucci look of the night—a black-and-white dress which showed off her growing baby bump.

“Was so excited when Anna Wintour invited the 3 of us to the Met Gala,” she wrote in the caption, speaking of herself, husband Alexis Ohanian, and their unborn child.

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Williams wore a black dress with sheer, billowing long sleeves and a breezy white chiffon skirt which flowed into a long train. The piece was embellished with pink-toned crystals at the neck and skirt, and featured white cuffs with pink crystal buttons. She accessorised the dramatic piece with layers of white pearl necklaces, a pearl headband by Lelet NY, and diamond stud earrings from Tiffany & Co., as well as her diamond engagement ring and wedding band. For beauty, she wore dark eye liner and a berry lip, and had her hair slicked back into a neat bob.

Williams’s big pregnancy reveal comes after she announced last year that she would be retiring from playing professional tennis in order to focus on and grow her family.

In an emotional essay, she wrote: “I have never liked the word retirement. It doesn’t feel like a modern word to me. I’ve been thinking of this as a transition, but I want to be sensitive about how I use that word, which means something very specific and important to a community of people. Maybe the best word to describe what I’m up to is evolution.”

She added, “I’m here to tell you that I’m evolving away from tennis, toward other things that are important to me. A few years ago I quietly started Serena Ventures, a venture capital firm. Soon after that, I started a family. I want to grow that family.”

She and Ohanian welcomed their first child, daughter Alexis Olympia Ohanian Jr., in 2017.

This article originally appeared in Harper’s BAZAAR US.