The Pussycat Doll has seen a string of images hacked and put on the internet over the weekend.
As well as the suggestive pictures, a video of Nicole, 40, in bed with her ex boyfriend Lewis Hamilton, 34, has also been uploaded.
In the clip the former couple can be seen cuddling in bed before messing about for the camera.
Neither the images or the video show Lewis or Nicole engaged in any explicit acts.
The exact date the footage was taken is unknown, however, Lewis and Nicole split for the last time in 2015.
The showbiz duo had been on/off for years after initially meeting at the 2007 MTV EMAs.
Daily Star Online have contacted a rep for Nicole Scherzinger and Lewis Hamilton for comment.
Earlier this month Lewis took to Instagram to reveal to his followers how he “hasn’t had a Valentine in years”.
Posting to his Instagram story, the F1 legend wrote: “It makes me so happy to see so many people celebrating their love and loved ones today.
“I haven’t had a Valentine in years but I hope one day I will.”
The British sporting hero signed off the post: “For now I just wanted to wish everyone out there a Happy Valentine’s Day.
“May the love you share grow and your journey together last forever. God bless you.”
Last September Lewis was linked to rapper Nicki Minaj.
The Queen hit-maker was snapped looking cosy with Lewis at the 2018 TommyXLewis launch party in New York City.
Shortly after they shared a string of selfies from a cute morning watching the sunrise together in the deserts of Dubai.
Meanwhile, Nicole is thought to have split from her tennis boyfriend Grigor Dimitrov earlier this month.