Rosie Huntington-Whiteley looks effortlessly stylish as she steps out in cosy jumper and chic leather skirt

She's put her talents to a good cause by designing a lingerie line in association with Breast Cancer Now.

And Rosie Huntington-Whiteley was enjoying some down-time after a busy day promoting the new range, stepping out in London on Wednesday in an effortlessly chic, off-duty look.

The 28-year-old model seamlessly mixed comfort and style, pairing a baggy grey knit with a tight leather skirt.

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Cool and casual: Rosie Huntington-Whiteley nailed off-duty dressed in a slouchy grey jumper and leather pencil skirt as she headed out for the day in London on Wednesday

Cool and casual: Rosie Huntington-Whiteley nailed off-duty dressed in a slouchy grey jumper and leather pencil skirt as she headed out for the day in London on Wednesday

Look luxe in leather with Rosie's pencil skirt

Fresh from unveiling her latest lingerie line for Autograph at Marks and Spencer, Rosie Huntington Whiteley stepped out in the perfect autumnal outfit featuring a leather skirt from the brand, and we can't wait to steal her style.

Her hugely successful underwear collection has seen her grow a close connection with the high street giant Marks and Spencer and so it's no wonder she opts to wear some of their latest collections now and again. Of course, being Rosie, she chooses only the chicest pieces from the label and then accessorises them so cleverly you'd easily mistake them for designer. This faux leather pencil skirt is the perfect example - by tucking it over an oversized knit and teaming with Gianvito Rossi sandals, Rosie easily makes this skirt look like the real deal. Click the link to the right to buy it for yourself (although there's only a few left!) and recreate the look.

Clearly leather pencil skirts are a must have item for the new season (Pixie Lott was also seen in this exact same one!) so shop the style below, from the likes of River Island Forever 21 and Vero Moda for an alternative look.

* PRICES MAY NOT BE AS ADVERTISED

Rosie's slouchy jumper was tucked into her skin-tight pencil skirt, making the most of her long legs and pert bottom while keeping cosy.

She added a pair of gold hoop earrings, delicate strappy stilettos and a YSL leather briefcase for a touch of glamour.

The striking lingerie model, who is dating action star Jason Statham, styled her blonde bob in a tousled updo, with loose tendrils framing her face.

Lovely as ever: Rosie styled her blonde bob in a tousled updo and opted for soft brown eye shadow and a slick of pink lipgloss 

Lovely as ever: Rosie styled her blonde bob in a tousled updo and opted for soft brown eye shadow and a slick of pink lipgloss 

Day off: The catwalk beauty was taking a break from promoting her new M&S lingerie line in association with Breast Cancer Now

Day off: The catwalk beauty was taking a break from promoting her new M&S lingerie line in association with Breast Cancer Now

Rosie's appearance comes after her latest Marks & Spencers underwear range launched in stores on Tuesday morning.

The blonde is fronting a fun campaign aimed at celebrating women while also raising awareness of the disease to support for Breast Cancer Awareness Month.

The 19-piece Rosie For Autograph range includes a post-surgery bra, which combines the luxurious details seen in her previous ranges, with specially developed features for women who have undergone surgery. 

Picture perfect: Rosie seamlessly mixed comfort and style, pairing a baggy grey knit with a tight leather skirt and high-end accessories
Picture perfect: Rosie seamlessly mixed comfort and style, pairing a baggy grey knit with a tight leather skirt and high-end accessories

Picture perfect: Rosie seamlessly mixed comfort and style, pairing a baggy grey knit with a tight leather skirt and high-end accessories 

It's evidently a cause close to Rosie's heart, since she was seen tearing up as she directed the seven brave models on the photoshoot that will accompany the new releases.

Speaking about her latest collection, which will see 10 per cent of all sales donated to charity, Rosie added: 'It has been amazing to co-design and develop this range, and meet exceptional and inspirational women featured in our campaign.'

Rosie launched her first Autograph collection, which she co-designs with head of lingerie Soozie Jenkinson, back in 2012 and is now a regular face for the retailer's every day design

And it's not the only way that Rosie has been showing her support because the blonde has also been encouraging social media users to #ShowYourStrap and help raise funds with M&S.

Charitable: Rosie was seen tearing up as she directed seven brave models who have undergone surgery on the photoshoot for the lingerie range 

Charitable: Rosie was seen tearing up as she directed seven brave models who have undergone surgery on the photoshoot for the lingerie range 

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