American Tennis star Serena Williams and her husband Reddit founder Alexis Ohanian have welcomed their second child.

The baby girl has been named Adira River Ohanian

Ohanian posted the news on Instagram through his verified account and said: "Welcome, Adira River Ohanian."

"I'm grateful to report our house is teaming with love: a happy & healthy newborn girl and happy & healthy mama. Feeling grateful. @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," he said.

The couple married in 2017.

They have another daughter named Alexis Olympia Ohanian Jr.