Mariah, taking to social media on Friday, shared a number of revealing pictures of herself in a very tight leotard, black tights and black boots.
The superstar was posing up a storm as she stood seductively with her legs apart and her hands placed on her hips.
In the second snap, she proudly flashes her rear to camera as she swings her head around.
The newly engaged star, 47, completed the fierce look with a black wig and dramatic make-up.
Read more: Mariah looks fierce in glitter bodysuit as she’s carried by hunky male dancers
“Ladies and gentleman… #Bianca,” the star wrote alongside one photo before adding, “#Bianca returns.”
However, Bianca’s big comeback left some fans baffled, with some not even recognising the star.
"It looks nothing like her!" one fan wrote.
While a third was happier about her return, saying: "OMG! Bianca's back!"
For those of you who don’t remember, Bianca appeared in the music video to the hit song written by Mariah and Jay Z.
The video was one of the most expensive ever made at a cost of $2.5millon.
It sees Mariah catching her boyfriend (played by American actor Jerry O’Connell) on a date with another woman (Bianca).
The pair then have a huge bust-up in the toilet
