1 of 20
MOMMY & ME
She's here! Serena Williams and Alexis Ohanian became parents on Sept. 1 when they welcomed their first child, a daughter named Alexis Olympia.
2 of 20
3 of 20
SHE GOT IT FROM HER MAMA
Wearing a navy and pink onesie that reads "Smart and Strong Like My Mama," the newborn flexed her arms or "biceps," as the caption on Alexis Olympia's photo stated.
4 of 20
MELLOW IN YELLOW
Sleepy baby! Williams and Ohanian's newborn daughter is already a champ at napping.
5 of 20
“Dad life is the greatest,” Ohanian wrote on an Instagram post, sharing a black-and-white photo of his and Serena Williams' newborn baby girl. "Entrepreneurship is all-consuming, it’s sleepless, we call our startups our ‘babies,’ we are ridiculously proud of them, and we pour all of ourselves into them – but she is already all that and more, she is my legacy.”
6 of 20
PRETTY IN PINK
Looks like the Reddit cofounder is enjoying parental leave! Ohanian shared a cuddly pic with Alexis Olympia. He captioned the daddy-daughter snapshot: "She's clearly dreaming up all the startups she'll start...And Grand Slams she'll win.... And...."
7 of 20
FUN FIRST, SLEEP LATER
New moms don't always have the easiest time staying well rested, but 3-week-old Alexis Olympia shared a pic on Instagram of her mom getting some shut-eye. "Mama never sleeps," read the caption on the photo, posted to the newborn's own Instagram account. "When she does, I go on adventures with daddy. 'Come on!' "
8 of 20
Williams cuddled her 6-week-old — and put the pair in matching flower crowns via a Snapchat filter — for an October post asking other moms about their thoughts on push presents.
9 of 20
"When you realize you're the hero Gotham needs," wrote the tennis champ, captioning an adorable photo of her daughter wearing a Batman costume for Halloween.
10 of 20
"We love bath time," Williams captioned a photo of Ohanian holding onto a bundled-up Alexis Olympia.
11 of 20
The couple's daughter may just be 10 weeks old, but she's already living the glamorous life! Alexis Olympia's tennis pro mom and her Reddit co-founder dad took flight in a private plane — and the proud parents captured the journey in a video posted to Instagram.
12 of 20
Little Alexis Olympia keeps her gaze on the camera as she lounges on mommy's lap.
13 of 20
Alexis Olympia yawns as she and the tennis champ clock in some mother-daughter time.
14 of 20
PACKING A PUNCH
Little Alexis Olympia is well on her way to becoming the greatest boxing champ of all time.
15 of 20
The tennis champ got candid about her daughter's struggles with teething on Twitter, captioning a sweet mother-daughter pic. “Teething- aka the devil – is so hard,” wrote Williams. “Poor Alexis Olympia has been so uncomfortable. She cried so much (she never cries) I had to hold her until she fell asleep. I’ve tried amber beads… cold towels…. chew on mommies fingers…. homeopathic water (lol on that one) but nothing is working. It’s breaking my heart."
16 of 20
17 of 20
Williams and daughter Alexis Olympia sport matching holiday looks on the baby girl's first-ever Christmas.
18 of 20
PRETTY IN PINK
To cap off 2017, the tennis champ shared a series of 10 intimate home videos, starring none other than her adorable daughter.
19 of 20
Alexis Olympia couldn't help but pass out in her dad's arms. “Dealing with this jetlag like,” the clip was captioned.
20 of 20
Days after the tennis champ announced she had withdrawn from competing in the Australian Open, the 36-year-old mother shared an adorable photo of her 4-month-old daughter.