Quote Originally Posted by TYK1986 View Post
I think you are right about number 12 Royal Command Performance. Diana is wearing her own clothing so probably rehearsal. The person on the site says it's Mary next to her but I think it's Cindy. She's wearing dress from that performance. Also pictures of the royals meeting the Supremes show Petula Clark on some and the third guy from the left [[no idea who he is). Other rehearsal photo's online show the same diamond pattern in the background.
To me, it looks like Mary [[in her costume) standing next to Diana. She is even wearing the long wig that you can see in photos from the actual performance as well as when they are standing in the receiving line.