Nicky Hilton [1] and her soon-to-be husband, James Rothschild, attended a prewedding dinner in London on Thursday, with friends and family gathering to celebrate the couple. Nicky wore a short, cream-colored dress for the occasion, posing for pictures on the steps of Spencer House in St. James's [2]. Her sister, Paris, did the same, stopping to smile for the cameras. Nicky and James are set to tie the knot in a lavish wedding on Friday at Kensington Palace, the home of Prince William and Kate Middleton. Keep reading for more pictures from the night, then check out more celebrities' Summer weddings [3].