Cat Deeley models affordable £45 M&S sparkly shift dress that's set to be the 'it' outfit of the season

If you're looking to bag the next 'it' dress of the season, a little black dress never goes out of fashion - and Cat Deely's affordable M&S sparkly shift dress is the one to beat

On tonight's episode of the hit ITV fashion series, Dress The Nation, guest judge Cat Deeley sports a sparkly mini dress, that is set to be the next glamorous must-have of the season. Fans are obsessed with this timeless and versatile Little Black Dress, especially since it's under £50.

With the festive party season coming up, this number will surely be your next go-to for Christmas and New Year parties, without breaking the bank. Copy Cat's style and grab some sparkly heals to match, and you're set for all occasions over the holidays. But I'd be quick, it's already selling fast.

READ MORE: Jo Malone launches limited-edition Christmas fragrance that makes the perfect gift

READ MORE: Next's 'fabulous' £50 stretch boots are back - and shoppers say they 'fit perfectly'

As little black dresses continue to transcend trends and seasons, this mini-shift dress from Marks and Spencer is an affordable statement look you won't want to snooze on. Cat Deely looks glamorous in the sparkly number, as she helps crown the winner of the iconic ITV show, and you can match her luxe-look with the dress that is sure to flatter any body type with its size range of 6 to 24.

The relaxed fit of this shift-style number makes it a complimentary and contemporary look, whether you're attending a work party or a festive date night. With a V-neckline that adds a splash of feminity, this sophisticated piece features a sleeveless design and shorter length that makes it perfect for Christmas parties.

With a budget-friendly price tag of £45, bag this chic piece to emulate Cat's classic, glam look for all the festivities on the horizon. Plus, this glittery number is sure to keep you sparkling all night long.

You can also bag Cat Deeley's glitzy heels, which are available for £35, then you just need to add some must-have tights to complete this festive look - and you're good to go.

If you're on the lookout for alternative styles and don't mind splashing out some cash, check out this similar number from John Lewis at £59. Or, for those eager to add a dash of colour to their Christmas-ready outfits, New Look as this blue sparkly shift dress for £46.