Brittany Mahomes shows off her growing baby bump while working out at the gym in an incredible Missouri mansion

Brittany Mahomes stayed fit while giving birth to her third child with husband Patrick Mahomes, working out in the gym at her Missouri mansion while showing off her growing baby bump.

Mahomes showed off her bump on Instagram in a matching orange workout outfit with her midriff exposed and her baby in the uterus.

The Mahomes family announced Brittany's third pregnancy in July and gave her an expected due date in late January, about a week before the Super Bowl.

Patrick and Brittany already have two children who accompany them to many Chiefs games to watch their father play, three-year-old daughter Sterling and son Patrick III.

Also in July, Brittany and Patrick announced that their third child would be a girl, leaving Sterling to play a game of tic-tac-toe to reveal three pink X's in a row, denoting the gender of her future younger sister.

Brittany Mahomes showed off her baby bump on Instagram while working out at home

Mahomes has embraced her lifestyle as an NFL WAG along with her soon-to-be family of five

Brittany Mahomes has fully embraced her lifestyle as an NFL WAG since Patrick entered the league in 2017.

The level of fame she has gained has increased tenfold since she began a friendship with Taylor Swift after the 14-time Grammy winner began dating Travis Kelce, Patrick's teammate and close friend.

There have been rumors of a strain in the friendship between Swift and Mahomes after they didn't sit together at any of the Chiefs games the “Anti-Hero” singer attended this season.

Speculation only increased after Swift endorsed Kamala Harris for president while Brittany supported Donald Trump.

However, the quartet appeared happy together as they attended the US Open men's final together in September and then went out for a lavish Mediterranean dinner in New York City.

Mahomes is expected to be in the crowd for the Chiefs' game against the Raiders on Sunday in Las Vegas.