London visit

Hi folks, We're taking a few days in London to take in a couple of shows and meet some new friends, we have been invited to a party on Thursday night at a club in Chelsea then on to the guy's house for more fun. We are staying at the Russel Hotel, if interested message me. My suitcase is full of party gear as I'm not sure of the dress code, hubby said it's a pyjama party and he sleeps naked , but so do I so why all the cloths ?