The 35-year-old singer - who recently rekindled her romance with Lewis Hamilton - is good friends with the 'Purple Rain' hitmaker and she reportedly visited him in the early hours of the morning following his set at Camden's Electric Ballroom.
A source told The Sun newspaper: ''Nicole was at another awards do attended by Prince Charles then went to see Prince in Camden.
''When the gig was over Prince went to his hotel in one car at 1am and Nicole pulled up shortly after with four minders. She stayed for a couple of hours.''
Earlier that night Prince played two surprise shows in England's capital treating fans to new material and his greatest hits.
More than 800 people were allowed in the intimate venue in north London after the doors opened at 7pm and each lucky fan paid just £10 to see the legendary singer perform with his new all-female band 3RDEYEGIRL.
The set included new single 'Pretzelbodylogic', along with 'Let's Go Crazy', 'Funk 'n' Roll', 'Guitar' and 'She's Always in My Hair', in which the 55-year-old singer changed the lyrics to, ''always in Prince's big curly hair''.
Audience members shouted, ''London loves you'', before he handed his guitar out to the crowd and dozens of fans surged forward.
The musician came back on for a second encore before fans were ejected from the venue and security let in hundreds of people who were still queuing outside for the second performance.
The pop superstar powered through several of his most famous hits, including 'When Doves Cry' 'Housequake', 'I Would Die 4 U' and 'Purple Rain' and it was around this time that Nicole arrived.
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