With a win over Spencer at UFC 250, Nunes made history by retaining her featherweight title and bantamweight titles.
She was the first fighter to successfully defend both of her belts simultaneously.
Since 2014, the Brazilian star has not been beaten by anyone, having won nearly every fight over the last few years with her vicious striking.
She was clearly feeling the celebration spirit as she shared a seductive snap with her 1.2million followers.
Nunes used the exact same naked photo that was featured in the ESPN magazine.