From supermodel to Supergirl! Cara Delevingne poses in action hero pants as she indulges in sexy selfie swap with Kate Moss

They are undoubtedly Britain's biggest supermodels.

So it's fitting that Cara Delevingne and Kate Moss should have a pose off in a sexy selfie swap which has taken Instagram by storm.

The shots, which were uploaded onto Cara's account on Wednesday, see both the 23-year-old model and her 41-year-old supermodel mentor strike their most seductive poses in skimpy underwear.

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Superwoman: Cara Delevingne flaunts her svelte figure in nothing but a pair of Superman print pants and a fur coat in a racy Instagram image uploaded on Wednesday 

Superwoman: Cara Delevingne flaunts her svelte figure in nothing but a pair of Superman print pants and a fur coat in a racy Instagram image uploaded on Wednesday 

Captioning the image 'SUPER WOMEN: photo taken by Miss Moss', it was liked more than 590,000 times in less than 24 hours.

Naturally, it generated a slew of comments. One fan wrote: 'We got the same undies, pretty lady. Got to love Target'', while another posted, 'Perfection'.

The second image sees veteran model Kate shoot the camera a sultry look as she writhes around on an unmade bed in black underwear and opaque tights. 

Anything she can do! Kate showed Cara how it's done in this racy 'selfie swap', writhing around on bed in black lingerie and opaque tights 

Anything she can do! Kate showed Cara how it's done in this racy 'selfie swap', writhing around on bed in black lingerie and opaque tights 

'SUPER KATE! Photo take by myself #KateMoss @mertalas #selfieswap', Cara wrote alongside the snap, which garnered almost as many likes.

Kate and Cara have become firm friends and have numerous joint campaigns under their belt, including luxury British brand Burberry and high street store Mango.

The photogenic beauties are currently in Milan together, where they attended a Mango photocall arm-in-arm after also appearing together on the front row at London Fashion Week's Burberry presentation on Monday.

See more of the latest celebrity Instagram photos and news 

Best buds: Cara and Kate, pictured at a Mango photocall in Milan, Italy on Wednesday, have become firm friends over the years 

Best buds: Cara and Kate, pictured at a Mango photocall in Milan, Italy on Wednesday, have become firm friends over the years 

Put your good foot forward in Cara's Mango boots

Showing off her long limbs, Cara Delevingne rocked a pair of Mango boots at the high street brand's store opening in Milan.

The model turned actress opted for a pair of snake skin inspired boots that cut above the ankle for an awkward, yet high fashion style. Paired with a black mini skirt, simple black top and a military style jacket, she oozed cool girl appeal!

Extremely versatile, these affordable heels are perfect for stomping into the new season. Team them with denim and T-shirts for a day time look, or dress them up in the evening with a full-bodied midi skirt and blouse. Click (right) to buy the exact pair now.

If you like the style but favor flats, try these booties from Boohoo (below). Or if your looking to invest, Robert Clergerie has just the thing. Ash and Isolá Daylin love a snake inspired boot too.

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Cara previously referred to Kate as her idol and 'partner in crime', saying of their new Mango collaboration: 'We are a lethal combination. 

'I admire her personally and professionally, she represents a true fashion icon. It is a privilege to learn and to share this experience with her'.

Meanwhile, Kate cooed after the pair first worked together in 2014, 'Cara's got it - she doesn't need advice, she knows what she is doing, she's very confident in front of the camera.'

Collaboration: The pair, who also teamed up in 2014 for Burberry, have revealed how they admire each other both personally and professionally

Collaboration: The pair, who also teamed up in 2014 for Burberry, have revealed how they admire each other both personally and professionally

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