The Kansas City Chiefs quarterback is sweating on his fitness for Sunday’s game against the Dolphins

BRITTANY Mahomes has shown off her gym gains after taking on a brutal new workout regime.

The wife of NFL star Patrick Mahomes, 28, hit the weights in a host of social media clips.

6Brittany Mahomes has hit the gym hard in her new mega-mansionCredit: Instagram @brittanylynne

6The wife of NFL superstar Patrick showed off her flexibility in the viral clipsCredit: Instagram @brittanylynne

6Brittany boasts more than 2 million followers on Instagram aloneCredit: Instagram @brittanylynne

Mahomes and Brittany recently moved into their custom-made mega-mansion in Kansas City.

The Chiefs superstar has built a lavish gym on the epic property – and his spouse is looking to tone her post-baby figure.

Brittany demonstrated her stunning flexibility as she shared the new workout with her 2 million Instagram followers.

Rocking a stunning figure-hugging gym outfit, she strapped two hefty 20lbs weights to her bar as she began the workout with a sweat-inducing lift.

The 28-year-old advanced to other stretches, including grueling crunches with dumbells on her belly.

She captioned the clips: “Truly obsessed with this set!”

Brittany’s new fitness regime comes after she revealed a secret handshake with fellow NFL Wag Taylor Swift.

The pair watched the Kansas City Chiefs play at Arrowhead against the Los Angeles Chargers last month.

Swift and Brittany were seen wildly celebrating a touchdown from their private suite at Arrowhead Stadium.

One NFL fan laughed: “These two make me happy.”

But another sighed: “Honestly? So cringe.”

Chiefs quarterback Mahomes is currently fighting to be fit for Sunday’s NFL matchup with the Miami Dolphins.

The two-time MVP is struggling with the flu and an injury to his non-throwing hand.

Mahomes didn’t look himself throughout Sunday’s shock loss to the Denver Broncos.

The five-time Pro Bowler passed for 240 yards, failed to throw a touchdown, and committed three turnovers.

6Brittany and Mahomes are high school sweethearts and have 2 childrenCredit: Instagram/brittanylynne

6She was recently spotted getting pally with Taylor SwiftCredit: AP

6The power couple moved into their new custom-made mansion over the summerCredit: Getty