The Give In To Sparkle pop-up will visit shopping centres throughout December, with Gü brand ambassadors providing on-site makeovers handing out puddings.
Shoppers will also be encouraged to enter a competition to win some indulgent treats.
The campaign kicks off at Westfield (White City) on 16 December, later visiting Covent Garden, The Bullring in Birmingham and the Trafford Centre in Manchester.
Because account director Anna Bradshaw said: "Shoppers are frantically going from pillar to post in the run up to Christmas. We want to remind them it’s ok to take a moment for out and give in to sparkle! Gü is all about those little pleasures in life and we are delighted to be running this campaign to strengthen the brand message just before Christmas."
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