Pregnant Brittany Mahomes Dishes Out the Ultimate Sideline Style in Vintage Chanel for Chiefs-Bengals Game

It's game time — and Brittany Mahomes is going vintage!

The soon-to-be mom-of-three is back to her WAG ways now that the Kansas City Chiefs are back on the field, and she's supporting her husband, star quarterback Patrick Mahomes, in style.

For the team's game against the Cincinnati Bengals on Sept. 15, Brittany rocked a vintage set from Chanel's 1997 spring collection — a slip dress (which she appeared to have altered into a romper) covered in block letters spelling out Coco Chanel and the brands logo, topped with a black collarless jacket with a matching liner.

Brittany finished out the look with Chanel loafers, ankle socks and a Chanel logo necklace, plus hexagonal sunglasses to compliment her upswept hair.

She brought along her mini mes for the game on the Chiefs home turf in Kansas City, with her kids, Sterling, 3, and Bronze, 1, both wearing Chiefs gear in support of their dad. Bronze was outfitted in a tiny Mahomes jersey, while big sister Sterling wore a custom checkerboard dress with "Mahomes" banners and arrowheads, in a nod to the Chiefs' logo.

Brittany stole the show during the 2023 season while cheering for her husband each week. Every game's look seemed to be better than the last. It was the Jan. 13 game against the Miami Dolphins when Brittany and Taylor Swift broke the internet in their matching Kristin Juszczyk-designed red puffer jackets. (Kristin is a fellow WAG married to San Francisco 49ers player Kyle Juszczyk.)

Swift, who is dating Chiefs tight end Travis Kelce, showed off her own allegiance to the team (and her boyfriend) alongside Brittany at several games last season — all the way through to the Super Bowl, where the Chiefs won it all.

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Brittany, who is pregnant with her and Patrick's third child, has been showing off her chic maternity style during the offseason, too. While celebrating her 29th birthday at the end of August, she wore a fun feathery tank top and cargo pants.

The night before her birthday, she celebrated her birthday with her husband and some friends.

“Birthday dinner with my girlies,” she wrote over a photo of her friends sitting at a restaurant table with balloons that said "29" in the background. For her actual birthday, she and some girlfriends headed to Chicago for a spa day, which she also captured for social media.

Brittany kept it casual for the first game of the Chiefs season, wearing a simple white tee and cargo jeans with a red and white stripe — and clearly saved her Chiefs red for week two! Swift, on the other hand, rocked a statement-making denim set with thigh-high red boots during week one.