Like a family member: Taylor Swift come to cheer on Patrick Mahomes with Brittany Mahomes and her cute daughter at Chiefs game

On Sunday, Brittany Mahomes showed her support for her husband Patrick Mahomes by bringing her two children along to watch him play alongside her new girlfriend Taylor Swift.

Doting mom: Brittany Mahomes was ever the doting mom on Sunday, as she brought her two kids to cheer on husband Patrick Mahomes alongside new gal pal Taylor Swift

The Bad Blood hitmaker, 33, who is presently seeing Travis Kelce, 34, was present at the Chiefs vs. Chargers game at Arrowhead Stadium in Missouri along with her husband, the 28-year-old quarterback of the Kansas City Chiefs.

Cute: The 28-year-old wife of the Kansas City Chiefs quarterback, 28, joined the Bad Blood hitmaker, 33 ¿ who's currently dating Travis Kelce , 34 ¿ at the Chiefs vs Chargers game at Arrowhead Stadium in Missouri

Brittany’s 2-year-old daughter Sterling Skye and 11-month-old son Patrick “Bronze” Lavon III were with her.

She danced up a storm with Swift while carrying baby Patrick on her hip, giving the impression that she was having a great time.

Having fun: Accompanying Brittany was her 11-month-old son Patrick 'Bronze' Lavon III and 2-year-old daughter Sterling Skye

The Chiefs overcame the LA Chargers 31-17, proving that they were a lucky charm.

The former forward for women’s soccer donned a red vest to show her support for her partner and his squad.

A good time: She appeared to have a grand time at the game, as she danced it up with Swift while holding baby Patrick on her hip

She wore light blue pants and a long sleeve white top underneath. For the event, Brittany wore her light blonde hair halfway up.

While Patrick was wearing a white onesie, Sterling was also sporting a red jersey to show support for her father.

Swift wore a red Chiefs sweater as a show of support for the team.

For the win: They proved to be a good luck charm for the Chiefs, who won 31-17 against the LA Chargers

And Kelce and Mahomes put on quite the show; the tight end scored a touchdown right before halftime and gained 143 yards in the first half alone, the most in his career for a first half, which gave Swift and her new companion Brittany enough to cheer about.

In red: The retired women's soccer forward rocked a red vest in support of her beau and his team

During their time together in the stands, the two “WAGs” have undoubtedly gotten closer. In fact, they have developed their own unique handshake, which they performed following the Chiefs’ first touchdown to Marquez Valdes-Scantling.

Casual cool: Underneath she sported a long sleeve white top and light blue jeans. Brittany wore her light blonde tresses halfway up for the occasion

During the first half, the two new friends even broke into a little dance as they enjoyed watching the action together.

Swift, clutching a drink, and Brittany, cradling her infant son, swung back and forth while matching head bobbing motions.

Cute: Meanwhile Sterling also sported red jersey in support of her daddy, while Patrick wore a white onesie

The 12-time Grammy Award winner was spotted yelling encouragement at her NFL partner.

At one exciting point in the first half, she even got so passionate that she hung out of the suite’s window.

Gang's here: Patrick's younger brother Jackson Mahomes, 22, was also in attendance, cheering on from behind Taylor and Brittany