Princes William and Harry party with friends in London

LONDON, June 2 (UPI) -- The royal British brothers William and Harry finished up a night of clubbing in London early Sunday.

The Daily Telegraph reported Princes William, 30 and Harry, 28, spent 5 hours with friends at the Tonteria nightclub in west London with friends. The group apparently were celebrating the impending marriage of close friend Thomas van Straubenzee, the British newspaper said.

Van Straubenzee is to marry Lady Melissa Percy, the youngest daughter of the duke of Northumberland, this year.