The Die Hard star and his wife Emma Heming went for a meal with model Karolina Kurkova and 13 business partners at the Grace restaurant in the country's capital Berlin on Saturday.

The group feasted on codfish, lobster, steak and pasta, washed down with fine wines, Moscow mule cocktails, and tequila until the early hours of Sunday morning (10May15), according to German newspaper Bild.

Willis was so pleased with the service he splashed out on a $923 tip for their waitress, identified only as 'Rachel S' - and she reportedly spent the cash partying with colleagues after her shift.