The Italian fashion duo will stage the huge bash to thank the 'Baby' hitmaker after he performs in Milan this weekend as Justin has long been a fan of the designers' style and wears their suits, waistcoats and bow ties to almost every premiere and awards ceremony he attends.
"We are fascinated by his capability of communicating with his music to a wide variety of audiences, from The Teenagers to a more adult public."
Domenico Dolce added that they are, surprisingly, big fans of the sugary Canadian pop singer's hits.
He said: ""We do love Justin's music. We have been listening to his last album during our fashion show preparation and in our freetime it's in our playlist! He belongs to the new generation, he cares about fashion. We are very happy to dress him and we admire him a lot."