Brittany Williams has plenty to celebrate this NFL season.

With boyfriend Josh Allen and the Buffalo Bills surging closer to a playoff berth, Pilates instructor Williams continues to show off her “Bills Mafia” pride on social media.

“Buffalo, ILY,” Williams captioned one post in September.

Here’s what you need to know about Allen’s favorite fan.

She’s a former cheerleader

A California State University, Fresno alum and cheerleader, Williams regularly shared photos of her game-day attire back in 2017, when she rocked red, white and blue — also the color scheme of Allen’s current team.

“I ❤️ game day #BeatUNLV #bulldogpix,” Williams captioned one Instagram post in October 2017.

Williams graduated in the spring of 2018.

She joined Allen on Draft Day in 2018

In 2018, Allen was selected seventh overall by the Buffalo Bills. The 6-foot-5 quarterback, who attended the University of Wyoming, signed a four-year deal with the team worth $21 million.

“Watching your dreams come true was a moment I will never forget,” Williams gushed at the time. “Here we come Buffalo! #BillsMafia.”

She’s always rocking Bills gear on game days

Williams is always ready for game day.

Last season, Williams frequently rocked red and blue at Bills Stadium in Orchard Park, and would often greet Allen, 24, on the sidelines.

“Thankful for YOU!” Williams captioned a post from November 2019.

Amid the COVID-19 pandemic, she’s still sporting Bills gear at home.

She and Allen love to travel the globe together

Allen’s past offseason with Williams was filled with overseas adventures.

In the spring of 2019, the couple checked out Monaco for the year’s Grand Prix Formula 1 race.

“Monaco, you have my heart 😫 the most incredible trip of my life, followed by making so many incredible new friends and memories. can’t wait to go back already ♥️ #joshlovespix,” Williams captioned one post.

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