Her exercise regime consists of swimming, running and sit-ups.
And the Oscar Award-winning actress Nicole Kidman showed off the impressive results at the 53rd Academy of Country Music Awards in Las Vegas on Sunday.
The 50-year-old drew attention to her very toned back in a gold cut-out frock.
Baby’s got back! Nicole Kidman shows off her VERY toned back in a gold cut-out frock at the Country Music Awards
Nicole stunned on the blue carpet in a glitzy gold floor-length frock, that revealed her muscular back thanks to its backless design.
The star’s ensemble also featured raglan sleeves, providing a touch of flair.
Nicole swept her blonde locks into an effortless chignon, with several strands left out to frame her face.
Details: The Oscar Award-winning actress opted for a glitzy gold number that revealed her muscular back, and also featured raglan sleeves
The Chanel ambassador’s makeup palette consisted of a porcelain complexion, defined brows, subtle kohl-rimmed eyes and a soft pink lip.
Nicole accompanied husband Keith Urban at the awards ceremony, with the country music star posing for photos with his stunning wife.
Keith, 50, cut a smart casual figure in a black T-shirt, grey blazer, distressed black jeans and red-lined suede boots.
Active: Nicole has previously opened up about her exercise regime, that consists of swimming, running and sit-ups
Nicole revealed the secrets behind her lean frame in an interview with US TV show Extra, last year.
‘I do sit-ups. Not a lot, but I do sit-ups. I love to swim and run. I actually love sports,’ she said.
And in terms of diet, Nicole follows a more balanced approach, having previously told the Los Angeles Times: ‘I’m actually not that strict with my diet. I pretty much eat anything, but all in moderation.’
The ex-wife of Tom Cruise also told US Women’s Health: ‘It’s walking a path that’s ultimately 80 per cent healthy, 20 per cent…sometimes it falls to 70 [per cent].’
In love: The Chanel ambassador joined her country music star husband Keith Urban, 50, on the blue carpet