The first rockstars to open a clothing boutique were The Beatles in 1967. And like Themis, it seemed like a good idea at the time. But in the end it turned out to be disaster. At least it looked cool. Eric Clapton, Charlotte Martin, Keith and Kim Moon, along with other Swinging Londoners attended the grand opening. Here's a video I found with some footage of the boutique's grand opening in color! And a picture of the inside of the boutique's dressing room area, in color as well!
p.s. Wouldn't it have been great if Jane had posed for the add with the other Beatle ladies instead of Jenny? It would make the picture a lot more special and interesting I think. I wonder where she was, oh well, it's still such an iconic photograph.
Jenny Boyd worked at the boutique. And according to Wikipedia she, along with John's old Liverpool buddy Pete Shotton, managed the store.