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Credit: Courtesy Wilmer Valderrama; Mark Cuthbert/ABACA

Over the weekend, Mila Kunis, Ashton Kutcher and Princess Beatrice proved that Hollywood and royalty can be a perfect mix.

The former That ’70s Show costars toured a string of bars with the young royal and her boyfriend, Dave Clark, in London on Saturday.

The foursome visited the Calloh Callay bar in the trendy Shoreditch neighborhood, where a source told PEOPLE, “They sat in our upstairs Mexican bar on barstools. They drank Jose Cuervo shots and cocktails.”

The source adds, “[They] were lovely customers, friendly and not at all demanding.”

A weekend in London is nothing out of the ordinary for Kunis and Kutcher, who have been traveling the world together. Just last week, the couple visited a winery in Spain and prior to that, they toured Bruges, Belgium.
– Phil Boucher