With Prince William away on Army duties and one of the summer's hottest parties to go to, Kate needed a trusted companion to accompany her. So she simply turned to her boyfriend's best friend for help. And she ended up being delightedly whisked around the dance floor by Guy Pelly at the star-studded pre-Wimbledon event. The two jived into the early hours of yesterday at the party, hosted by Sir Richard Branson at the Roof Gardens nightclub in Kensington, West London. Wearing a demure black jacket and black and red floral knee-length skirt, she did not seem to be missing her royal boyfriend - who is on a military training exercise in Wales - too much.