What triggered this decades-long hatred between two of the most memorable names in cinema history?

Davis and Crawford had already established themselves among the talented elite in the movie-making industry when this quarrel began.

Thus began one of the most ruthless squabbles in show biz.

Davis was quoted as saying, “I fell in love with Franchot, professionally and privately.”

Their rivalry reached a head when they were both casts in “Whatever Happened to Baby Jane?”

both Joan Crawford and Bette Davis resorted to violence while filming scenes together.

The fact that Crawford and Davis made it out of the movie relatively unscathed is astounding!

The pair never worked together again, and they never resolved their differences.

Good," (viaRefinery29).