Sunday night, Patrick Mahomes turned 29 years old. His wife, Brittany Mahomes, threw a lavish party at their opulent Kansas City, Missouri, mansion to celebrate.

On her Instagram Story, Brittany, 29, gave fans a behind-the-scenes peek at the extravagant décor, which included a gigantic balloon arch that welcomed attendees to the celebration.

Silver mylar balloons in the form of a chain were combined with red and black balloons to create the arch. There was a “Patrick’s 29th” sign nearby.

9Brittany Mahomes shared a look at a 29th 𝐛𝐢𝐫𝐭𝐡day bash for Patrick Mahomes on Sunday night on her Instagram Story.brittanylynne/Instagram

9The decor included a massive balloon arch and a sculpture created with silver balls and red LED lights, as seen here.brittanylynne/Instagram

9Another look at the 𝐛𝐢𝐫𝐭𝐡day party shared by Brittany on Sunday night shows a balloon arch surrounding a giant “29” mirror.brittanylynne/Instagram

Giant mirrors that read “29” and were encircled by the same balloons from the enormous arch were also part of the décor. A collection of silver balls adorned with red LED ᵴtriƥ lights was positioned across from the large “29.”

From there, guests were welcomed by oversized old pictures of the football player as a kid, additional balloons, a picture booth, and red uplighting that fit the theme.

Additionally, Brittany displayed a personalized plastic cup and a drink koozie with her husband’s visage from a 𝘤𝘩𝘪𝘭𝘥hood picture.

The celebration was planned at the ideal moment, since the Chiefs had recently defeated the Cincinnati Bengals in a thrilling game hours before it started.

9Brittany shared a photo at a plastic cup and a cold beverage koozie with Patrick’s 𝘤𝘩𝘪𝘭𝘥hood face printed on them Sunday evening.brittanylynne/Instagram

9Brittany posted a look at a photo booth in their Kansas City, Mo. mansion.brittanylynne/Instagram

9Brittany gave a peek at a tall block decorated with throwback photos of her husband at his party.brittanylynne/Instagram

Brittany, who turned 29 on August 31st, went to the game on Sunday with her two kids, Patrick “Bronze,” 1, and Sterling, 3, who turned 3. She is expecting their third 𝘤𝘩𝘪𝘭𝘥 right now.

Along with the Chiefs, Taylor Swift also taunted her boyfriend, Travis Kelce.

Notably, for the second straight game, the 34-year-old pop sensation chose to spend time with Chariah Gordon, the fiancée of Patrick’s and Kelce’s teammate Mecole Hardman Jr., rather than sitting with Brittany.

9Brittany smiled at Patrick’s football game in Kansas City, Mo., earlier Sunday.brittanylynne/Instagram

9The former soccer star posed with her kids, Sterling and Bronze, at the Chiefs’ game.brittanylynne/Instagram

9Patrick and Brittany shared a kiss at the NFL star’s game Sunday while she held their kids.brittanylynne/Instagram

Swift and Gordon attended the game together last week, and the latter shared a humorous video of the singer of “Karma” rejoicing over the team’s victory over the Baltimore Ravens.

Despite rumors that the Grammy winner and Brittany had a falling out over their divergent political philosophies, they silenced the rumors last Sunday by going on a double date with their famous athlete partners at the US Open men’s singles championship.

The group of four then went to Mēdüzā Mediterrania in New York City for dinner.