Jeremy Stephens and Charles Oliveira will collide this December in the co-main event of The Ultimate Fighter 20 Finale.

Set for December 12 from the Hard Rock Hotel and Casino in Las Vegas, the event will feature the crowning of the first-ever female strawweight champion in the UFC. The tournament is currently being played on The Ultimate Fighter.

Stephens (23-10) has gone 10-8 in his Octagon career, including a recent decision loss to top contender Cub Swanson. The defeat snapped a three-fight win streak for Stephens – all of which came after a move down from lightweight.

Oliveira (18-4) could be facing some pressure from officials after missing weight and being pulled the day of a planned fight with Nik Lentz recently. He has gone 6-4 with the promotion, including a loss to former champion Frankie Edgar.

Stephens is currently ranked 10th, while Oliveira is No. 14 in the latest poll.

Below is the current card, which is set to air on FOX Sports 1 and UFC Fight Pass:

Inaugural UFC Female Strawweight Championship

Featherweight: Charles Oliveira vs. Jeremy Stephens

Lightweight: Joe Proctor vs. Yancy Medeiros