has become the star of the first major from the former high street department store Debenhams.
The actress shone in the festive promo, in which she joined 's Glow Up host Leomie Anderson, comedian Ellie Taylor, and podcaster Hannah Cooper-Dommett.
In the ad, the Austin Powers star stunned in a sparkling green sequined adorned dress which teased cleavage with a keyhole detail.
As she lay on the sofa holding up a phone with the retailer's website, Liz uttered the brand's new tagline: "Duh Debenhams darling."
The mother-of-one appeared to laud the ease of online shopping rather than heading to the high street in amongst the Christmas chaos.
As a scent was sprayed in the air, Liz looked at the phone and remarked: "Ooo love that."
In another scene, Ted Lasso's Ellie Taylor donned a pink suit as she blissfully levitated from the sofa in a meditation pose, echoing the same slogan: "Duh Debenhams."
This was also the case of Leomie as she asked: "Still shopping on the high-street?" before flipping a phone to show she was on the retailer's website before saying their tagline.
The camera then panned back to models including TV star Joel Dommett's wife Hannah at a festive party.
Speaking on the advert, Liz said: "I'm absolutely delighted to be part of 'Duh, Debenhams' this Christmas, my favourite time of year!
"This campaign beautifully embodies the joy of the festive season, blending humour with style."
She added: "There's nothing quite like celebrating with loved ones at holiday parties, and Debenhams makes it easy to find the perfect outfits and gifts that elevate every gathering."
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