Just strange to be wearing a cummerbund, as not a normal dress item.
So, I was casting my mind back to the fashion of that time, and remember that about that time very wide (about 15cm) black elastic 'belts' with centre front silver clasps/ buckles were in fashion (usually worn with a skirt). It's possible that this could be described as a 'cummerbund' (especially if the person reporting it was an older male who had no idea of fashion lol!).
Can anyone who remembers what I'm talking about find a good picture to post?