But behind Louise's pretty smile lies a determined and single-minded young woman with staying power, boundless energy and enthusiasm … and the knack of knowing when it's the right time to take a step in a different direction.
Right now is such a time after ten years of almost unbroken chart success — with Eternal from 1992, and then solo.
When she steps out under the bright lights at Guildford Civic on January 31, as part of her Changing Faces UK tour, it will be a case of ‘farewell to all that'.
She said: "I can't believe that I've been around for ten years now. It's like, where have ten years of my life gone? But I'm 27 now and I've come to a point where I need to do something fresh.
"Obviously it will still be pop but it is very important to move forward.
"This is a very personal tour for me and involves a lot of the old songs.
"In many ways it's a goodbye to the old me and a big thank you to all those who have supported me over the years."
Louise's first solo single, Light Of My Life, made the Top Ten in 1995 and her debut album, Naked, went platinum, earning her the Best Female award at the Smash Hits Poll Winners' Party.
By her second album, Woman In Me, there was no doubting her popularity — confirmed by countless appearances on magazine covers.
In 1998 she released the hit All That Matters then took two years off to begin her marriage to Mr Redknapp.
She returned in 2000 with her third album Elbow Beach, named after the golden stretch of sand where they spent most of their honeymoon.
It produced the hits 2 Faced and Beautiful Inside, followed by a version of Gerry Rafferty's Stuck In the Middle With You.
With such an impressive discography behind her a hits album, Changing Faces, was a logical step last year.
Louise plans to work with some of the best songwriters around, and may even return to SM:TV.
She said: "I'd jump at the chance to go back, I really loved it. Working with Cat Deeley was just brilliant - she's such a great girl."
But for now you can catch a final glimpse of the original Louise, from the shy 15-year-old signed by EMI in 1990 to the confident performer of 2002.
She is also appearing locally at The Anvil in Basingstoke on February 19 and The Hexagon in Reading on February 21.