'I don't like him telling me what to do': Rosie Huntington-Whiteley is sexy in workout gear as she explains why she WON'T workout with fiance Jason Statham and how she beat her anxiety

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She's been dubbed 'the face that launched a thousand bras' as the body behind one of the biggest-selling lingerie collaborations on the high street.

But it's no thanks to muscle man fiance Jason Statham, Rosie Huntington-Whiteley admits, as she reveals she'd rather not be told what to do when it comes to workouts.

Rosie shows off the impeccable body in a candid interview and cover shoot for this month's ELLE UK, revealing how her secret battle with anxiety at work helped her to improve her confidence.

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Work it: Rosie Huntington-Whiteley introduces her new activewear collaboration with Marks & Spencer in the new issue of ELLE UK, as she talks working out and anxiety 

'It's a horrible feeling,' Rosie said, admitting that her work has sometimes caused her terrible anxiety.

'There was one particular time when I had terrible anxiety attacks. But I got through it. 

'Those rough patches are always times you can look back on and in hindsight, you can be quite proud of … It gives you a deeper understanding of yourself. 

'Each year, that understanding gives me so much more. It's true what they say: you get more confident, and grounded, and just weed out the bullsh*t.' 

Body beautiful: The stunning star was an easy pick to front the magazine's biggest fitness issue to date

Getting candid: Rosie talks about why she doesn't work out with her famous fiance

In 2017, Rosie introduces the new activewear branch of her successful Marks & Spencer line for Autograph.

She successfully carved out a niche for herself as the face of their hugely successful lingerie line before elevating her association to design for the line in 2012.

Devon-born Rosie was just 15 when she entered the modelling industry via an internship at a modelling agency and began to work in front of the camera, herself.

Of that 10 years, she's spent six with Hollywood hardman Jason, who she met during her first foray into acting in 2011.  

Though their transatlantic lives - he stays largely in Los Angeles for movies and she works regularly in London - are largely kept out of the spotlight, Rosie says you most certainly won't find them in the gym together. 

She told the magazine: 'Going to the gym is my time, I don't want to be distracted and don't want to be goofing around. 

'It's a time when I feel I need to be focused on myself because it's like a form of meditation. 

'I don't like to be told what to do by my other half. If he's like, "Do another squat," I'm like "No! You get down and do another f**king squat."'

Old romantics: Rosie surprisingly doesn't credit future-husband Jason with getting her in shape, saying she prefers to work out on her own

On her quiet, long-lasting relationship, she continued: 'People say to me that we're always so private as a couple. 

'And I think, "Are we?" Maybe it's just because I don't think we are. But it seems like more effort to put ourselves and our relationship out there to the media and to the world. 

'I just kind of met someone, and we fell in love, and we're together. It's normal to me, it's my home life.' 

Besides her candid interview, Rosie serves as the covergirl for ELLE's biggest fitness issue to date, out this December.

Stunning shape: Rosie heads up one of the best-selling lingerie brands on the British high street, for M&S

It's easy to see why, considering her impressive form in the hot and sweaty shoot, which sees her contort her figure into some very elegant poses. 

'I love to see my posture and physicality: seeing my body doing the things it's supposed to do,' she said, explaining her interest in activewear.

'I feel there are a lot of different things a woman's body is expected to be, but my favourite way to see mine is when it's being physical. That's when I feel my sexiest and most powerful.' 

Read the full interview in the January issue of ELLE UK, on sale 13 December. For more exclusive content visit www.ELLEUK.com.

The January issue of ELLE UK is on sale December 13, 2016 and Rosie for Autograph Active at Marks & Spencer is out in January 2017. 

Keeping it private: Rosie never believes it when people say that her relationship is private