Gifted Amateurs

The dancers and occasion are not identified, but judging from the setting, the audience and the girl in the top hat, this has the look of an amateur, although very well-costumed, production.

From a DelCampe sale:

http://www.delcampe.net/page/item/id,285424067,var,Photo-75-Paris--danseuses-french-cancan-,language,E.html