Who else wishes they had Rosie Fortescue's figure?

It’s not often that we see Made in Chelsea stars baring their flesh but, in Rosie Fortescue‘s case, there’s a VERY good excuse.

The reality star posted a selfie on her Instagram wearing nothing but a matching black and white Calvin Klein underwear set, drawing attention to her enviably taut abs. She added the appropriate hashtag: #shareyoursexy. We don’t blame her for wanting to show off her fantastic body, which she works hard for in gruelling work outs at the gym!

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So how does Rosie, who enjoys the odd roast dinner and mac n’ cheese treat meal, stay in shape? Talking to InStyle last July, she explained: ‘I work out twice a week at Lomax with my trainer Danny Osbourne. We’ll start out with ten minutes of boxing. As we meet twice a week we might do legs one day and then an upper body workout another day. I do a lot of squats with weights and kettlebell swings. ‘

However, she admitted that this regime is tailored towards her naturally slim figure: ‘I’m naturally skinny so don’t need to do obvious cardio like running or working out on the cross trainer so I think weights is a really good way of toning and getting really strong. It makes me feel better about myself when I feel internally strong.’

The multi-talented star has recently launched her jewellery range called ‘Rosie Fortescue Jewellery’, which features heart-shaped earrings and necklaces along with colourful rings. She also remains on the Made in Chelsea show, recently getting caught in the middle of a sisterly clash between Lucy and Tiff Watson after the lattera accepted an internship with Rosie. Uh oh!

One thing’s for sure – we’re going to be watching Made in Chelsea without the biscuit tin next time, now we have Rosie as our body inspiration!

Francesca Specter/@ChezSpecter