Here are two obscure EUFs for your viewing pleasure
1928 German silent: The Girl from the Revue (German
as Girl von der Revue) -
Dina Gralla loses her skirt on the dance floor. I can only find this photo. I'm not sure if a copy of the movie exists.
1943 comedy: Henry Aldrich Gets Glamour.
Henry steps on Frances Gifford's gown and... well, you can guess.
This one's on YouTube: youtube.com/ watch?v=JbKpetdfKms
It's the last gag of the movie 1:11