Nicole Scherzinger gets hot and sweaty with Mary J Blige

The singers apparently share the same personal trainer and Nicole uploaded this snap of her with R'n'B superstar Mary during a heavy gym session earlier today.

She said: "Working out with the beautiful @maryjblige! Getting our sweat n grind on with our trainer! Luv u Mary!!!"

Nicole, 33, and 41-year-old Mary both looked happy to be there despite being put through the paces of their individual gruelling fitness regimes.

And if the ex Pussycat Dolls' enviable physique is anything to go by, they're obviously in good hands.

Nicole Scherzinger on stage in neon colour-block catsuit

End result ... Nicole shows off her beautiful body

Nicole has recently been juggling her rekindled romance with Formula One driver Lewis Hamilton and her UK Killer Love tour, which ended last week.

And Mary is currently working on her forthcoming album, My Life: Act 2, due for release in May.