The Folies Bergere dancers. I beleve that this is relates to a film called "Nuits de Paris" or "Paris Nights". The auction description at EBay says it is from the estate of "the Bernard Brothers – one of the most popular comedy acts to appear in British variety theatres during the late forties and early fifties" who also performed at the Lido in Paris.
Photo by Royal Films Geneve
https://www.ebay.co.uk/itm/GENEVE-CAN-CAN-DANCERS-CASINO-PERHAPS-A-REVUE-SHOW-OF-1950S-lido-paris/143448611758?hash=item2166341bae:g:5bcAAOSwdvxd1qxz
A little sleuthing led to these clues as to the provenance of the photo and an additional photo:
https://www.ebay.co.uk/itm/Danish-Film-Program-Nuits-de-Paris-1951-Bernard-brothers-Xenia-Monty/223709806215?hash=item341624be87:g:V04AAOSwZ15dqIgy
The film, which I don't see at You Tube:
https://www.imdb.com/title/tt0141671/?ref_=nv_sr_srsg_0
