Serena Williams welcomes second child, Adira River Ohanian, with husband Alexis Ohanian

THE BREAK: Serena hosted a party to prepare for her second child this summer.

And Adira River makes two!

Serena Williams welcomed her second child with husband Alexis Ohanian, the latter announcing the birth of Adira River Ohanian on social media Tuesday.

“I'm grateful to report our house is teaming with love: a happy & healthy newborn girl and happy & healthy mama. Feeling grateful,” the Reddit co-founder wrote on X, formerly known as Twitter.

“@serenawilliams you've now given me another incomparable gift — you're the GMOAT. Thanks to all the amazing medical staff who took care of my wife & our daughter 🙏 I'll never forget the moment I introduced @olympiaohanian to her baby sister.”

Ending with a Bible quote, Ohanian writes, "Your peace would have been like a river, your well-being like the waves of the sea."

Serena gave birth to her first child, Alexis Olympia Ohanian Jr, almost exactly six years ago during the 2017 US Open. Not long after playing her final Grand Slam match in Flushing Meadows, the 23-time Grand Slam champion revealed she was expecting her second during the Met Gala.

“Was so excited when Anna Wintour invited the three of us,” the former world No. 1 teased at the time.

Serena later shared a video to Tik Tok to celebrate the occasion:

"Welcome, my beautiful angel," she captioned.

Olympia, who became a fixture at her mother’s matches when she returned to action from maternity leave in 2018, had been longing for a sibling, and was very excited to hear the news when mom and dad told her earlier this year.

Congratulations poured in from the likes of U.S. Vice President Kamala Harris.

Congrats to the GOAT!