Ace maternity style! Pregnant Serena Williams shows off baby bump at Met Gala

SI Staff | May 1, 2017

This story was written by Jen Juneau and originally appeared on People.com. 

The baby countdown is on for Serena Williams.

The tennis star stepped out Monday evening at the Met Gala in New York City, fully showing off her baby bump for the first time since announcing her pregnancy on April 19.

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Serena and fiancé Alexis Ohanian, 34,

will welcome their first child this fall, her rep confirmed to PEOPLE last month following an accidental post the athlete made on Snapchat before quickly deleting.

“20 weeks,” the mom-to-be captioned a mirror selfie, in which her baby bump was clearly visible underneath a La Blanca Anniversary Suit created in a custom yellow especially for Serena.

Serena confirmed the news herself on Instagram a few days later, writing a heartfelt tribute to her unborn child alongside a beach selfie.

“My Dearest Baby, You gave me the strength I didn’t know I had. You taught me the true meaning of serenity and peace. I can’t wait to meet you. I can’t wait for you to join the players box next year,” she captioned the photo.

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A post shared by Serena Williams (@serenawilliams)

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A post shared by Serena Williams (@serenawilliams)

Last Tuesday, Serena spoke out during a TED talk in Vancouver about “racist” comments made by Ilie Nastase (according to ESPN, the former world No. 1 tennis star was overheard telling a reporter, “Let’s see what color it has. Chocolate with milk?”).

“I’ve been really supportive of my peers and the people that I work with. I’ve been a pro for almost 20 years,” she said. “For me it’s really important to hold women up. It’s something, these young women they’ll come to the locker room, they’ll want to take pictures with me. For me, I want to be a good leader and a good example for them.”

Added Serena, who also took to Instagram to address the incident, “Not only did he have rude things to say about me and then my peers, I felt it was important for us to stand up for each other and to stand up for myself.”

BONUS: See all of Serena's stunning photos from SI Swimsuit 2017!

Serena Williams

Serena Williams was photographed by Emmanuelle Hauguel in Turks & Caicos. Swimsuit by

Onia

, available at

shopspring.com

.

Serena Williams

Serena Williams was photographed by Emmanuelle Hauguel in Turks & Caicos. Swimsuit by Swim Like A Mermaid.

Serena Williams

Serena Williams was photographed by Emmanuelle Hauguel in Turks & Caicos. Swimsuit by

American Apparel

, available at

americanapparel.com

.

Serena Williams

Serena Williams was photographed by Emmanuelle Hauguel in Turks & Caicos. Swimsuit by

Indah

, available at

revolve.com

.

Serena Williams

Serena Williams was photographed by Emmanuelle Hauguel in Turks & Caicos. Swimsuit by Swim Like A Mermaid.

Serena Williams

Serena Williams was photographed by Emmanuelle Hauguel in Turks & Caicos.

Serena Williams

Serena Williams was photographed by Emmanuelle Hauguel in Turks & Caicos. Swimsuit by

American Apparel

, available at

americanapparel.com

.

Serena Williams

Serena Williams was photographed by Emmanuelle Hauguel in Turks & Caicos. Swimsuit by

Meg Liz Swimwear

.

Serena Williams

Serena Williams was photographed by Emmanuelle Hauguel in Turks & Caicos. Swimsuit by

Onia

, available at

shopspring.com

.

Serena Williams

Serena Williams was photographed by Emmanuelle Hauguel in Turks & Caicos. Swimsuit by Swim Like A Mermaid.

Serena Williams

Serena Williams was photographed by Emmanuelle Hauguel in Turks & Caicos. Swimsuit by

American Apparel

, available at

americanapparel.com

.

Serena Williams

Serena Williams was photographed by Emmanuelle Hauguel in Turks & Caicos.

Serena Williams

Serena Williams was photographed by Emmanuelle Hauguel in Turks & Caicos. Swimsuit by

Midnight Swimwear

.

Serena Williams

Serena Williams was photographed by Emmanuelle Hauguel in Turks & Caicos. Swimsuit by

American Apparel

, available at

americanapparel.com

.

Serena Williams

Serena Williams was photographed by Emmanuelle Hauguel in Turks & Caicos. Swimsuit by

Midnight Swimwear

.

Serena Williams

Serena Williams was photographed by Emmanuelle Hauguel in Turks & Caicos. Swimsuit by Swim Like A Mermaid.

Serena Williams

Serena Williams was photographed by Emmanuelle Hauguel in Turks & Caicos. Swimsuit by

American Apparel

, available at

americanapparel.com

.

Serena Williams

Serena Williams was photographed by Emmanuelle Hauguel in Turks & Caicos. Swimsuit by

Onia

, available at

shopspring.com

.

Serena Williams

Serena Williams was photographed by Emmanuelle Hauguel in Turks & Caicos. Swimsuit by

Meg Liz Swimwear

.

Serena Williams

Serena Williams was photographed by Emmanuelle Hauguel in Turks & Caicos. Swimsuit by

American Apparel

, available at

americanapparel.com

.

Serena Williams

Serena Williams was photographed by Emmanuelle Hauguel in Turks & Caicos. Swimsuit by

Indah

, available at

revolve.com

.

Serena Williams

Serena Williams was photographed by Emmanuelle Hauguel in Turks & Caicos. Swimsuit by

Midnight Swimwear

.

Serena Williams

Serena Williams was photographed by Emmanuelle Hauguel in Turks & Caicos. Swimsuit by

Meg Liz Swimwear

.

Serena Williams

Serena Williams was photographed by Emmanuelle Hauguel in Turks & Caicos. Swimsuit by

American Apparel

, available at

americanapparel.com

.