Caroline Flack and X Factor co-host Olly Murs strips down to a shirt and underwear for flirty new shoot

They've become the best of friends since landing the X Factor presenting gig.

And Caroline Flack and Olly Murs flaunted their flirty new friendship during a sexy shoot for this week's Heat magazine. 

The 35-year-old presenter wore just a shirt and underwear while she pranced around with her co-host Olly, 31, who wore a tight white vest and jeans.

Pretty Caroline left little to the imagination in a pair of black high-waisted knickers with a matching bra layered over an oversized white shirt over the top and a pair of sexy black heels.

She wore her ombre bob in a chic curled style while hamming it up for the cameras by doing a star-jump in the air before playfully riding on Olly's back. 

The singer-turned-TV presenter donned a 1980s-inspired ensemble in a pair of voluminous light-wash jeans and a tight white vest which flaunted his muscular frame.