The singer, who was crowned the runner-up of the 2014 series of The X Factor, entertained fans with a fierce performance in Dublin, Ireland.
And boy, did she look smokin'?!
Fleur, who was in Simon Cowell's category during the TV series, was pictured on stage at the 3Arena in the city centre and showed off her enviable figure in a black leather catsuit.
The all-in-one stage outfit features silver chains and zips and Fleur teamed it with a pair of high-heeled leather boots.
The 'X Factor Live Tour' kicked off on Friday night (13 February) in Belfast, Northern Ireland, and it's clear the gang are already loving every single minute of performing to huge crowds every night.
Fleur has also shared several backstage photographs with fans, which were taken on the opening night.
In one, the star can be seen working out in the gym with Stevi Ritchie, while another snap shows her in the make-up chair getting prepped for the show.
Fleur told her followers: "Getting ready for the first show of the tour with @BodypaintGirl & @jamesbickmore !! BELFAST ARE YOU READY???!!"
The X Factor contestants will tour the UK and Ireland for the next month before wrapping up the show on 21 March at London's O2 Arena.
Have you see the 'X Factor Live Tour' yet? Tell us below!