The northern girl has built a career on her outrageous antics both on and off camera.
And while she may have left the MTV show behind her, it seems she is still as naughty as ever.
Taking to the official Marnie Simpson Instagram page, the provocateur stripped off to her birthday suit to bare all.
Posing naked in the bath, the outgoing call left nothing to the imagination as she flaunted her curves.
With her side to the camera, Marnie teased her toned frame and perky behind as she gazed into the distance – as if not realising the camera was there.
“Why would you post a naked pic of yourself and why would your boyfriend want the world to see what should be kept private for him?”
Thanks to a large mirror on the wall, the starlet’s derrière was fully exposed.
Glistening in the light, the water splashed booty send fans into overdrive.
Ignoring her lack of clothing, Marnie simply captioned the shot: “Life is better with a tan.”
However, it wasn’t long before the post was flooded with messages from fans… and not all of them were supportive.
“I’m far from a prude but why would you post a naked pic of yourself and why would your boyfriend want the world to see what should be kept private for him?” one follower quizzed.
“What a tramp,” a second cruelly fumed.
A third continued: “Sure I saw a post not that long ago saying Marnie was sick of Kim K showing her naked body on Instagram?”
“Save it for your boyfriend,” a fourth begged.
Though some fans were loving the flesh-flashing bonanza.
“Love the view babe come over and give me more that,” one follower gushed.
Another praised: “Proper fit.”
Earlier this year Marnie shocked her followers after accidentally posting a picture of her boyfriend’s penis on her Snapchat story.
In a clip posted to her Snapchat account, the former X Factor lad can be seen in the background as she films her pet pooch.
The exposé came just days before a host of Casey Johnson naked pics appeared online.
In eight videos seen by Daily Star Online that are doing the rounds online, Casey can be seen pleasuring himself in a number of locations.
While he only turns his iPhone camera around to show his face in two of the clips, he is distinguishable from his heart tattoo on his wrist.