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Spoiler: That's Not Actually Serena Williams’ Baby in Her Latest Ad

Jenn is perhaps best known as the author of the popular parenting blog Breed ‘Em and Weep (2005-2012). She’s written for many magazines, newspapers and websites, including Brain, Child Magazine, Literary Mama, and The Boston Globe. Jenn’...

Serena & baby star in a sweet new ad — but that's not her baby

Hey, even a baby needs a day off once in awhile. Especially if said baby is Alexis Olympia Ohanian Jr. — tennis icon Serena Williams' daughter. Though Alexis was primed for her big screen debut as the costar in a Gatorade ad with her mom, the almost-3-month old had to bow out when she got sick. No prob: When you're Alexis Olympia, you've got a stunt double lined up at all times.

"While Serena intended to have Olympia make her screen debut as part of this film, her daughter was under the weather and unable to be on set, but the sentiment remains the same," a Gatorade spokeswoman wrote to publication AdAge via email.

MoreSerena Williams' Baby Has Her Own Instagram Account

Other than that small blip, the commercial filming went on as planned: It features Williams cuddling a Baby Alexis lookalike.

More: A First Peek at Serena Williams' Baby Daughter

The video is still fab, though we admit we can't wait for Alexis Olympia to get better and take her rightful place as Most Famous Baby in Commercials Ever. In the ad, Williams tells her "daughter" that she doesn't mind if she plays tennis badly — as long as she keeps playing sports. Williams also talks about the great things she's found in athletics, from courage to bonding with her teammates to learning to set goals for herself. The commercial also shows photos of other inspiring women playing various sports as kids — including Girls star Allison Williams and YouTube CEO Susan Wojcicki. The girl-power campaign — supported by Gatorade and PepsiCo — is trending on Twitter: #SistersinSweat.

Williams tweeted, "There are so many reasons to quit, but even more to keep playing. Even if you don’t go pro, sports can teach you so much. So keep playing."

We're on board with these #SistersinSweat for sure. And we hope future athlete Alexis Olympia feels better soon so we can see her make her debut (outside her crazy cute Instagram account, that is). Maybe baby Alexis partied a little too hard at her parents' wedding on Thursday in New Orleans? The event was commemorated with many emotions by her dad, Reddit cofounder Alexis Ohanian.

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