March 1 (UPI) -- Serena Williams celebrated baby Alexis Olympia's first half-birthday Thursday by posting a series of new photos.
Alexis Olympia Ohanian Jr. was born on Sept. 1 in West Palm Beach, Fla. Her father -- and Williams' husband -- is Reddit co-founder Alexis Ohanian.
"My baby is 6 months today. So yummy," Williams posted Thursday on her Instagram account.
The first photo she shared featured her little girl sporting a purple and gold polka-dot onesie. She also posted a bibbed offering before showing off baby Alexis Olympia wearing a "Gangster Napper" graphic outfit, complete with a fake silver chain printed on it.
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Williams' post had more than 100,000 likes in 30 minutes and had interactions from several celebrities, including comments from Kelly Rowland and Zendaya.
"Happy 6 months princess! I love you," Rowland wrote.
Alexis Olympia has her own Instagram account and 277,000 followers.
Earlier in the week, her father included some of her photos on billboards in Palm Springs, Calif., while wishing mom Serena well during her journey back to tennis.
"These just went up on alongside I-10 into Palm Springs. @olympiaohanian & I wanted to welcome her back to tennis. Designed them myself, with some help from Jr.," Ohanian wrote on social media, including photos of the billboards throughout the city, using the monicker "Greatest Momma of All Time."
Williams, 36, will compete at the BNP Paribas Open from March 5 through March 18 at Indian Wells Tennis Garden in Indian Wells. Calif.
"I'm so fortunate to have @alexisohanian and @olympiaohanian by my side for my comeback. I love my surprise so much from them," Williams responded Wednesday on social media, while including drone footage of the billboards. "I feel so special. Love you both."
