The 42-year-old seemed very happy to be saying goodbye to 2020, showing off her gymnastics skills by doing a double stag jump.
She captioned the snap: "New year, new beginnings, new day, new chapters, new firsts, new starts, new risks to make, new chances to take! Thank you God for another year of reNEWal!"
The heart eyes and fire emojis dominated the comments section with fans expressing their admiration.
"You look amazing," commented one fan, while another added, "The most beautiful woman in entertainment."
Others wrote that Nicole looked "unreal" and "gorgeous".
The singer has been enjoying a beachside holiday with boyfriend Thom Evans, 35, to celebrate the new year.
On New Year’s Eve, Nicole showed off her abs in a matching crop top and skirt that featured a thigh-high split.
The pair has been sharing snaps from their getaway and appear very loved up.
In November, the singer and former rugby star celebrated their one-year anniversary with Thom sharing a sweet message to Nicole on Instagram.
"In a year that has been filled with so much uncertainty, you have been my shining light," he wrote. "Happy 1 year anniversary my love."
Nicole also shared her own post, writing: "Happy Anniversary my love. Who knew my whole world would change a year ago. You are my answered prayer. I love you so very much."
The pair got together after meeting on X Factor: Celebrity in late 2019, when Nicole was a judge and Thom a contestant with his band, Try Star.
Amid speculation surrounding their blossoming romance, Nicole ended up voting Thom and his fellow bandmates off the show, however, the pair went public at January’s Golden Globes.
Nicole previously dated Formula 1 World Champion Lewis Hamilton for seven years, while Thom was in a relationship with British star Kelly Brook.