Nicole Scherzinger flashes abs in sports bra while revealing dangerous injury hidden from fans

Nicole Scherzinger is showing fans what goes on behind the glamour.

The 48-year-old Pussycat Dolls singer led a new Instagram carousel with a polished backstage selfie, posing with her long dark hair styled in voluminous waves, glamorous makeup and her toned abs on display in a black sports bra and gray sweatpants.

But the next image told a very different story.

Scherzinger shared a close-up of her injured leg, revealing extensive red marks and healing burns stretching across the area around her knee and down her leg.

CÉLINE DION REVEALS 17-YEAR SECRET HEALTH BATTLE BEFORE RARE DIAGNOSIS "What they see vs. what they don’t see..." she captioned the post.

CELINE DION BREAKS DOWN ONSTAGE DURING EMOTIONAL RETURN AFTER 6-YEAR HIATUS The injury dates back to the Pussycat Dolls' Sept.

26 performance in Düsseldorf, Germany, when Scherzinger said boiling water fell on her leg approximately one hour before she was scheduled to take the stage.

Despite suffering burns and blisters , Scherzinger went ahead with the performance.

"Nothing like boiling water falling on your leg an hour before your set," she wrote on Instagram Stories at the time.

"But the show must go on." The singer's latest photos gave followers another look at the aftermath, contrasting the carefully put-together image audiences see backstage with the physical toll she has been managing behind the scenes.

Fans quickly praised Scherzinger for continuing to perform through the injury.

"How you continued to put on a show even after that! Incredible," one person wrote.

"You are truly the meaning of warrior Nicole Scherzinger," another commented.

Singer Gloria Gaynor also offered encouragement, writing, "you are a warrior, @nicolescherzinger!" PUT YOUR ENTERTAINMENT KNOWLEDGE TO THE TEST AND SEE HOW YOU SCORE Another follower called the injuries her "Battle scars." Scherzinger has continued performing with the Pussycat Dolls throughout their "PCD Forever" tour, including a stop at Dublin's 3Arena on Oct.