Looking radiant as ever, Davina, 53, stunned as she took her seat on the panel alongside Rita Ora and Jonathan Ross and new judge Mo Gilligan.
Oozing sex appeal, the Big Brother presenting legend turned up the heat in a tight white number.
The floor length gown featured a plunging neckline - held in place with tiny straps.
Taking to social media shortly before the show kicked off, Davina shared a string of backstage snaps from the Masked Singer studio.
Showing off her full look, the British TV icon revealed that the dress was sinfully slit up the side.
Posing up a storm, Davina flashed her killer pins as she laughed away for the camera with her hand on her hip.
A second shot showed her sneaking a cheeky selfie as she sat waiting for the first mystery celeb to take to the stage.
The look went down a treat with fans who all praised her age defying beauty.
Commenting on the upload, one fan wrote: "Wow simply stunning."
Another added: "Love. This look is just gorgeous."
A third chimed in: "That figure!" before adding two fire emojis.
Meanwhile, a fourth commented: "Stunning. My family love this show, good fun and we I’ve trying to guess."
Davina recently opened up about the pandemic has made her rethink fitness.
The gym bunny has been sharing fitness tips online as well as workouts to help keep her fans motivated during lockdown.
"Previously, my 'keeping fit and healthy' was all about my body and making myself look hot in a bikini - and actually now, it's just about staying alive longer and being in the best possible position to beat anything should it come my way," she explained to Women’s Health UK.
Davina added: "A lot has been said about health and fitness for your mental health this year, and we all know that it really makes an enormous difference.
"My 2021 goal is just to really try and enjoy and let myself go and let loose when we can, because when you have your liberty taken from you, it makes you realise how little you make of your liberty when you have it, and how much I have taken my liberty for granted."