Can Can

 

Wikipedia notes two interesting things about the can-can.  It was originally sort of a French square-dance engaging four couples, which is a little hard to imagine, and then there's this:

The dance was considered scandalous, and for a while there were attempts to suppress it. This may have been partly because in the 19th century, women wore pantalettes, which had an open crotch, and the high kicks were intentionally revealing.

Um, "partly?"

You can read the entry yourself HERE.