Marnie Simpson has had fillers injected into her bottom.

Marnie Simpson (c) Instagram

Marnie Simpson (c) Instagram

The 'Geordie Shore' star has revealed she was desperate to achieve a "rounder" derriere after gaining "a lot of weight recently" but, rather than go under the knife, she's opted for a procedure that sees small needles inserted into her flesh.

Taking to her Instagram account, the 26-year-old beauty uploaded a short video of the needles being pushed into her butt and she accompanied it with the caption: "I'm always up for trying out new things and in the hands of expert @simonourianmd1 I discovered this procedure that takes no longer than 15 minutes to preform and is completely painless...Using a small filler to enhance your natural curve and achieve a rounder bottom, everyone Knows I've gained a lot of weight recently so this has helped me achieve a nicer shape without going under the knife my bum... (sic)"

The brunette star has made no secret of the fact she's put on over two stone in weight in recent months and has since decided to take a break from all the partying on 'Geordie Shore' and 'Ex on the Beach' in order to get her body back into shape.

She said: "I want to do it for my mental health and I need to get my fitness back on track. I've put on two stone in weight and it's made me feel upset. I used to be eight stone and now I'm 10 stone 6lbs so that's something I want to work on."

Marnie - who is in a relationship with Casey Johnson - is also using the time away from the television screen to catch up with her friends and family.

She explained: "I'm stepping back and I am going to focus on myself for a while.

"I did seven TV shows back to back and it made me so stressed. I felt stressed and drained after I finished 'Ex On The Beach'.

"I didn't really get to see my family or friends and I was always getting judged by people on social media."