Sept. 16 (UPI) -- Alexis Olympia Ohanian Jr. might only be a few weeks old, but Serena Williams' daughter already has a huge Instagram following.
The baby girl was born on Sept. 1 at the St. Mary's Medical Center in Palm Beach Gardens, Fla.
She is also the daughter of Williams' fiancé Alexis Ohanian, a Reddit cofounder.
Baby Ohanian made her first Instagram post on Thursday, writing: "Thinking about mommy and daddy." The photo features the baby sleeping in a pondering-like pose. It has more than 24,000 likes.
The baby posted another Instagram photo on Friday, writing: "Biceps." That photo features the child sleeping with her arms held above her head. It has nearly 12,000 likes.
Alexis Ohanian Jr.'s biceps photo also features a nod to her famous mom. She is wearing a onesie reading: "smart and strong like my mama."
Baby Ohanian had 23,500 Instagram followers as of Saturday afternoon but only follows two accounts: her mom and dad.
Williams isn't the first athlete to have a newborn with their own Instagram account.
Williams, 35, announced she was pregnant in April on Snapchat. She famously won the Australian Open in January while she was pregnant.
The 23-time Grand Slam singles champ posted her first photo with her daughter earlier this week.
"Meet Alexis Olympia Ohanian Jr. You have to check out link in bio for her amazing journey. Also check out my IG stories," Williams wrote Wednesday in the Instagram caption.
Williams also posted a video on her website, chronicling the pregnancy.
"We had a lot of complications, but look who we got," Williams says at the end of the video. "We got a baby girl. Jr."
Alexis Olympia Ohanian, Jr. weighed 6-pounds and 14-ounces at birth.