Serena Williams and husband Alexis Ohanian are proud parents after welcoming Adira River into their family.
The tennis star, 41, disclosed her pregnancy with a low-key video on TikTok, alerting fans to their new addition.
If a cute Instagram photo of their eldest daughter, Alexis Olympia, is any indication, she is already enjoying being a big sister.
The five-year-old was seen smiled broadly as she embraced her brother, who was wrapped in a colourful blanket and headgear.
The adorable upload was captioned: ‘My sister and me.’
Serena was among the first to praise the image in the comments below, simply penning: ‘My babies.’
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Reddit co-founder Alexis, 40, agreed: ‘The best big sis on the planet!’
An Instagram follower wrote: ‘Beautiful… These two will be friends for life.. Congratulations.’
‘You’ve been training for this event @olympiaohanian,’ a fan said. ‘Baby sister needs you to be who only you can be. #sisters #womenleaders.’
As a commenter added: ‘Congratulations on your promotion to big sister!!’
Serena and Alexis announced the arrival of their second child in May, with the new mum revealing her pregnancy on the red carpet at the Met Gala.
They announced Adira’s arrival on social media on Tuesday, just days after blowing everyone’s minds with a drone gender reveal.
The couple were seen catching up with Alexis Olympia in a quick movie on the Wimbledon champion’s TikTok page, set to Bazzi’s hit Beautiful.
The athlete, dressed in a bright pink sweatshirt, promised her family she would ‘be right back’ before returning with the child.
It was up to Alexis to reveal additional information about Adira’s arrival, posting a family photo on Instagram.
‘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,’ he captioned the post.
‘@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 added the quote: ‘”Your peace would have been like a river, your well-being like the waves of the sea.”’