Ann Wilson and Nancy Wilson - Photographs from the 83rd Annual Hollywood Christmas Parade which was attended by a variety of stars and their children in Los Angeles, California, United States - Monday 1st December 2014
The live album is set for released in November.
The movie begins filming in the UK.
The 'Sherlock' and 'Doctor Strange' star joined Gilmour onstage at the Royal Albert Hall for a rendition of the Pink Floyd classic.
Time to learn what Kathy Bates' character has to do with all of this.