Do you know, I had forgotten the movie 'High Society'. I wish I could look at O/W's free dance again, there was lots of intricacy there. Nicole's dress is fabulous, looks like bias cut blue silk, and although it has a long, flared skirt, it clings to her body and doesn't conceal her lines. Very classy and original, and I'm pretty sure we'll see some imitators.
ETA: Happily Thomas didn't shave his head to look like Bing Crosby.