Marnie Simpson showcases her toned torso in a cropped sweatshirt

She transformed her figure after losing three stone following the birth of her son Rox in October last year. 

And Marnie Simpson flaunted her toned torso in a cropped sweatshirt as she stepped out with boyfriend Casey Johnson on Monday. 

The former Geordie Shore star, 28, paired a beige tracksuit with an Adidas baseball cap as she arrived at her Bedfordshire home carrying a Marks and Spencer bag.

Fresh-faced Marnie finished off her laid-back style with black flip-flops and wore her long brunette locks in loose waves. 

The mother-of-one got close to beau Casey, 25, as she touched his cheek while he emptied shopping from the car boot.  

X Factor star Casey wore a black beanie hat and printed khaki tracksuit and Nike sliders. 

Earlier this year, Marnie revealed she had lost three stone after giving birth to Rox in October 2019, who she welcomed with singer Casey. 

The reality star has been documenting her home workouts on Instagram, by personal trainer Sophie Hamshere, which have left her feeling ‘proud’ but ‘absolutely done in by the end of it’. 

Marnie also shared a loved-up snap of her with Casey on Instagram last week which she captioned ‘partner in crime’ alongside a rose emoji.  

Speaking to OK! Online, the television personality admitted her staggering weight loss was down to adopting a special sugar-free diet rich in greens in order to combat a chronic urinary tract infection.

She said: ‘I couldn’t eat anything with sugar in, and everything’s got sugar in. My doctor was like, “Look, you’ve had no immune and antibiotics aren’t really the best thing to…” 

‘They get rid of all the good bacteria. The best thing about fighting this [chronic UTI] is your own immune. So, your immune system needs to be the best it can be. 

‘So she told me to cut out all sugar, drink loads of water, eat loads of fruit, eat loads of greens – which I’ve never done in my life.’

The reality star told the magazine she now weighs less than she did before she got pregnant last year.

Marnie suffered from the enduring bladder condition before getting pregnant and the condition made the reality star’s 28-hour labour even more gruelling.

She met Casey on celebrity dating show Single AF in late 2017 and the pair bought a house together after just eight months of dating.