The judge is back on the tropical island to film her Judges' Houses part of the competition, where she is whittling down her group of Girls to take through to the live shows.
And in a break from judging her acts, Nicole hit the beach, where she showed off her incredible beach body.
Wearing a two piece gold bikini, the former Pussycat Doll posed on the sands for the snap which she uploaded to Instagram.
"#shaka #hangloose Sending nothing but sweet #aloha & #blessings to everyone! #HAWAII," she wrote alongside the pic.
In another, she could be seen practicing her yoga skills, writing: "Yoga gone bad, lol! #HAWAII."
Nicole is rumoured to have reunited with her on-off boyfriend Lewis Hamilton, following their shock split earlier this year.
The Sun said that the 'distraught' star had a real battle to 'even get out of bed and go to work at 'The X Factor' auditions' in the wake of their split, and was hoping to work it out with Lewis at a secret meeting.
Nicole returns to screens on 'The X Factor' when the auditions begin on Saturday 31 August on ITV.