Brittany Mahomes is 29 and feeling fine in the Windy City!

The pregnant Kansas City Current co-owner celebrated her 29th birthday on Saturday, Aug. 31, with a girls’ trip to Chicago, and she documented the experience on her Instagram Stories for her followers.

“Off to Chicago we went for brunch and a spa day with my girlies,” Brittany wrote over a photo in which she posed between four friends.

The group included fellow NFL WAGs Paige Buechele and Lyndsay Bell, as well as Melissa Mathews and Miranda Hogue.

Brittany dressed casually for the day, accessorizing a simple black midi dress with black sunglasses, a Chanel choker and a pair of silver sneakers. Her friends followed her cue in casual-chic outfits beside her.

The soon-to-be mom of three shared photos of the Chicago skyline on her Instagram Stories and also reposted photos and videos her friends took of her posing outside of a plane and getting excited for the day of pampering during their flight.

The night before her Chicago trip, Brittany celebrated her birthday with her husband, Patrick Mahomes, 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.

“And my lover @patrickmahomes,” she wrote in another Instagram Stories slide featuring her husband.

On Saturday, Brittany posted more photos on Instagram that she took with the Kansas City Chiefs quarterback, 28, at the birthday dinner.

“Year 29✨” she captioned the photo set.

Brittany wore a fuzzy black halter top paired with khaki pants and black open-toe heels in the photos as she embraced Patrick, who was sporting a black-and-white striped shirt and jeans.

Patrick shared a simple tribute to his wife on Instagram on Saturday in honor of her birthday.

“My ❤️! Happy birthday! @brittanylynne,” the NFL star captioned a photo of the pair — who are currently expecting their third baby — holding hands with their kids: daughter Sterling Skye, 3, and son Patrick “Bronze” Lavon III, 21 months.