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By People.com / Karen Mizoguchi
Updated Jun 03, 2017 @ 1:15 pm
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Credit: Jean Catuffe/Getty

Serena Williamsserved a beautiful ace in maternity style — and bonus point: her outfit is totally affordable!

The pregnant tennis icon, 35, brought her baby bump to cheer on older sister, Venus Williams, at Roland Garros during the French Open on Friday. Serena and her unborn baby were the best cheerleaders as they celebrated the 36-year-old’s victory.

Venus, who is the 2002, 2013 and 2015 French Open winner, reached the fourth round with a straight-sets defeat of Elise Mertens, 6-3, 6-1.

VIDEO: Serena Williams Is Pregnant With Her First Child

Serena, who is a 23-time major winner, was chic in a black dress and long floral kimono from Zara that retails for $149. The outerwear features an open V-neckline, long sleeves, contrasting patch pocket, and a matching belt that ties around the waist.

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Long Floral Print Kimono; $149; zara.com


On Thursday, Serena confirmed that she doesn’t know the sex of the baby she’s having with fiancé and Reddit co-founder Alexis Ohanianafter fans of the mom-to-be freaked out when Venus referred to Serena’s baby as “she” — with many speculating that the older Williams sibling had accidentally revealed the gender of her future niece (or nephew).

When asked what Serena’s child will call her, 36-year-old Venus told Eurosport on Wednesday, “She’s going to call me ‘favorite aunt.’ ”

In April, Serena announced the couple were expecting their first child together. One month later at the 2017 Met Gala in New York City, she and Ohanian told Vogue’s André Leon Talley that they’re waiting to see whether they’ll welcome a boy or a girl.

The mother-to-be had her last match at the Australian Open finals in January, where she won against Venus.

Williams and Ohanian were also in the stands for Venus’ match on May 31.

This Story Originally Appeared On People