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8 March 2012, 11:42
The former Pussycat Dolls star tweeted a picture of the pair together following their workout.
Nicole Scherzinger has been working out with fellow singer Mary J Blige.
The pair hit the gym together on Wednesday (7th March) and Nicole posted a picture on Twitter following the session.
She wrote: "Working out with the beautiful @maryjblige! Getting our sweat n grind on with our trainer! Luv u Mary!!!"
Nicole returned to the US following the completion of her first ever UK tour as a solo artist last month.
Earlier this year, the former Pussycat Dolls star announced that she was stepping down as a judge on The X Factor USA in order to re-focus on her music career.
The singer spent just one series on the panel after she was drafted in to replace Cheryl Cole.
Check out a picture of Nicole Scherzinger and Mary J Blige at the gym below (picture: Twitter):