'What About Us' singer Frankie showed her support to the Strictly celebrities taking part in the live tour, as they performed their final tour dates at London's O2 Arena.
Frankie, who is expecting her second child with footballer husband Wayne Bridge, looked stunning as she posed alongside Sunetra Sarker, Pixie Lott and professional dancer Janette Manrara backstage.
Showing off her growing baby bump, Frankie looked chic in chunky black boots, black leggings, a grey top and a mustard jacket.
While making her way to the venue, Frankie tweeted: "Finally at the strictly show!!! @keviclifton @MsRachelStevens you best win tonight!!! I'm a bit jel! Doesn't seem right not dancing!"
Frankie competed in Strictly last year and reached the finals with her professional dance partner Kevin Clifton.
The Saturdays star was originally scheduled to go on Strictly's live tour, but following her pregnancy announcement, she had to pull out after suffering with severe morning sickness. Rachel Stevens was called in as Frankie's replacement.
Announcing her baby joy in January, Frankie said at the time: "Wayne and I are delighted to announce that we are expecting our second baby.
"It is very early days, but we couldn't be happier and Parker will make a wonderful big brother."
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