Prince Harry Steps Out for Cousin's Wedding in London
09/20/2013 AT 12:30 PM EDT
The ceremony was held in the Chapel at St. Mary Undercroft at the Palace of Westminster, located at the Houses of Parliament.
Harry – now a doting uncle to baby Prince George – was seen boarding a red bus with other guests on route to the wedding breakfast, the U.K.'s Daily Express" reported. It was his second wedding in a week after attending last weekend's Norfolk nuptials of James Meade and Lady Laura Marsham.
Harry's late mother, Princess Diana, was maternal aunt of the groom, whose mother is Diana's sister, Lady Jane Fellowes. The couple's engagement was announced in February.