At the height of S Club 7's reign, Rachel Stevens was a lads' mags favourite who regularly topped FHM's list of Sexiest Women of All Time.
And as the group gears up for a reunion tour, stunned fans are convinced that despite two decades having passed, Rachel, now 44, looks exactly the same as she did in her twenties.
While there is no suggestion she has had surgery, the naturally pretty star has said she would be open to it in the future.
"Plastic surgery is great if you want it," she once told The Sun.
"It's such a personal choice. It's great people can have the opportunity. I haven't thought about surgery now, but who knows further down the line? I don't rule it out for when I'm older."
To maintain her fresh-faced look, she swears by drinking two litres of water a day and adding a drop of fake tan to her night cream to give herself a morning glow.
She keeps fit by attending ballet barre classes and doing Pilates and tries to eat as cleanly as possible without denying herself anything.
And Rachel believes that sexiness also comes down to attitude.
"I definitely feel like I've got more confident and sexier as I've got older," she said in a separate interview.
"Your body is always changing, which is great, but you know more what you want out of life too, and that inner confidence gives you more sexiness."
Revealing that she's proud of her lads' mags heyday, the mother-of-two said she looks forward to being able to show her grandchildren her racy covers.
"I'll definitely show off my FHM covers when I'm a grandma, I'm sure," she added.
There is a third element to Rachel's radiance, and that's the care she gives to her mental health.
Rachel first started seeing a therapist at around the age of 19 after finding fame with S Club bandmates Hannah Spearritt, Jo O'Meara, Jon Lee, Paul Cattermole, Bradley McIntosh and Tina Barrett.
The singer opened up to Loose Women about struggling with her mental health and detailed the steps she takes to manage it.
"In a band like S Club we were marketed at a very young audience and it was very shiny and happy and everyone saw the sort of finished polished product and we were very packaged," she explained.
"Underneath all of that I had a lot of my stuff going on and my emotions and my things that were going on.
"As soon as the camera's on and [you're] going on and singing [hit single] Reach, putting a smile on and putting a show on… but there's a lot obviously going on behind the scenes."
Rachel continued: "I actually had personal therapy when I was 18/19. That's when I first started having therapy and felt like I really needed to talk about all of my stuff that was going on that I really needed to just make sense of."
"I have therapy weekly. I need it as that kind of outlet. I think I’m someone who has always been a worrier, someone who thinks a lot, someone who internalises a lot and is incredibly emotional and sensitive.
She added: "It's such a weird thing growing up in an industry where you see pictures of yourself all of the time… constantly seeing images of yourself which I think is really unhealthy.
"I went into S Club feeling quite insecure, not really knowing who I was and growing up publicly. I think all of that stuff plays into everything, really."