Amanda Holden looks incredible as a very sexy Santa as she poses with co-star Ashley Roberts

AMANDA Holden has sent pulses racing after slipping into a sexy Mrs Claus outfit alongside her radio co-star Ashley Roberts.

The star, 53, sizzled in the red strapless Santa dress with white fur trim as she and Ashley celebrated the start of advent.

Amanda teamed her festive frock with a matching cape, Christmas hat and knee-high black boots before posing up a storm at the Heart FM studios in London.

Posting a photo on Instagram, Amanda joked: "Tis Officially Christmas season. Although I’ve been ready since November 6th!!!"

Fans were quick to comment, with one excited follower writing: "Santa baby!"

Another added: "It's beginning to look a lot like Christmas!"

Britain's Got Talent judge Amanda works alongside Ashley, 43, on the Heart FM Breakfast Show.

In the pictures, the Pussycat Doll is frolicking alongside Amanda in a satin green dress with red and white striped socks, Santa hat and sky-high stilettos.

Also posting the shots on her own grid, Ashley said: "All I want for Xmas is for you to caption this carousel."

One fan replied: "Amazingly beautiful ladies….. always have my HEART."

Another wrote: "Be my Santa surprise anytime!"

Since the start of November, Amanda had been calling upon Heart FM bosses to 'switch on Christmas' and play festive songs on the airways.

Listeners were even challenged to ring in and correctly answer five questions about Xmas in order to kick-start the festive season.

After one caller eventually succeeded, Amanda opened the doors to her new Surrey mansion and revealed Christmas was already well underway in her home.

The mum-of-two treated fans to a video tour of her incredible pad, which she and her husband Chris bought last year for a cool £7million.

Her followers were able to spot a big, fancy wreath on the front door before being shown ginormous Christmas tree sat in her impressive entrance hall.

The huge faux snow-tipped fir was sat alongside a black grand piano and adorned with white fairy lights and black and pale pink baubles.

"What a difference a year makes," Amanda said.

"Moved in a year ago today….and nearly finished the whole house,… what to do next!!! I love a project. More makeovers coming."

Amanda has previously shown her talent for home renovations alongside her good pal Alan Carr for their BBC show Amanda & Alan's Italian Job.