Kim Kardashian dressed up as Mystique from the X-Men franchise for Halloween.

The blue latex costume, which showed off her curves and flat stomach, was lined with blue prosthetic bumps.

She also dyed her hair red and wore bright yellow contact lenses to complete the look

Kim took to her Twitter to show off the ensemble as she posed in front of a mirror.

Fans raved about the appearance, with many declaring it to be their favorite Halloween outfit from the reality star.

One fan said, "Wow, spot on love this!!!! Probs one of my fave Halloween looks you've done!"

The reality star recently attended her son saint's soccer game.

Her estranged husband, Kanye West, was also in attendance.

She has called the rapper out on his anti-semitic statements.