Ronda Rousey will take on Raw women's champion Nia Jax for her title at the Money In the Bank event on June 17, live on Sky Sports Box Office.
Jax made the challenge to Rousey at a WWE media appearance at Radio City Hall in New York, and it was accepted by the former UFC champion.
The match will be only Rousey's second for the company, following her debut appearance at WrestleMania, where she teamed with Kurt Angle to beat Triple H and Stephanie McMahon.
It was at that event that Jax won the title, beating her former friend Alexa Bliss to raise the gold in New Orleans.
Rousey earned a large amount of praise for her performance at WrestleMania, in which she traded blows with both McMahon and her husband in a match many selected as the best of the night.
It had appeared that her first WWE program would be against seasoned competitor Mickie James, with whom the beginnings of a feud were seemingly sown on Raw in the past few weeks.
But she will now face the prospect of competing for a title in what will also be Jax's second defence following a successful retention against Bliss at Backlash.