Can someone tell me what movie by reading this synopsis (hint classic horror)?

Question

I cant remember the movie that I watched when I was a kid,.and its sound like this...

set-up in 18th century ballroom dancing (60's or 70's movie)..a guy dancing with this woman..she's so pretty..but so sad..her head is not real..and fragile,.she wore a necklace suddenly the head loosen up while dancing

Answer 1

The Rocky Horror Picture Show

Answer 2

Hi there.

Frankenstein: The True Story (1973), starring Michael Sarrazin and David McCallum is the one you want, a tv version of the classic tale. The original monster pulls the head off the new female version at the ball, her scar is hidden by a choker.

Cheers, Steve.

Answer 3

Steve J is absolutely correct.  I saw that on TV as a kid back in the 70s and when the woman's head came off, I freaked.  

Answer 4

alice in wonderland?