The tennis icon and her husband welcomed their second baby girl in August

On Thursday, the tennis icon, 42, shared two new snaps of her baby daughter Adira River, who she welcomed with her tech entrepreneur husband Alexis Ohanian in August.

In the first Instagram Story post, Williams captured a photo of her baby girl wearing a pair of cozy white socks as she laid on a fluffy blanket, while in the second her eldest daughter Olympia, 6, got in on the action.

As Adira laid on her mom’s chest wearing a moon-printed sleepsuit, a sleepy-looking Olympia could be seen sitting next to her mom.

The youngster, who wore a colorful floral dress, laid her head on a cushion in the photo and looked directly at the camera.

Ohanian, 40, revealed Adira’s name on Instagram on Aug. 22 with a sweet family photo.

“Welcome, Adira River Ohanian,” the post began. “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 concluded the post with a quote, writing, “Your peace would have been like a river, your well-being like the waves of the sea.”

The post also featured two adorable pictures of Ohanian introducing Adira to Olympia for the first time.

The couple first announced Adira’s arrival on TikTok. In the video, shared to Williams’ account, the family is seen sitting at a table, with Olympia leaning on Williams as Ohanian types on a laptop in front of them.

Williams then stands up and says she’ll be right back, before returning with a tightly swaddled baby in her arms. As Williams sits back down between her husband and daughter, both admire the infant and Olympia plants a kiss on her baby sister’s forehead. The TikTok ends with two cute Polaroid-style shots of the new family of four.

“Welcome my beautiful angel,” the sportswoman captioned the video.

Last month, lucky baby Adira was showered with gifts from her mom’s longtime partner brand Nike.

Sharing a glimpse at the impressive haul on her Instagram Story, Williams revealed the brand had sent her little one plenty of cute shoes and tiny outfits.

“Look at all this stuff for baby Adira, Williams told the camera as she panned through the gift boxes. “I really love the little Nike shoes, just always so sweet.”

“Look at this little crop top!” she continued. “It’s pretty awesome. Thanks to my Nike family!”