How many movies have K.K. Barrett and Sara Montez collaborated on?

They have worked on 1 movie together! Their first movie together was Birds of Prey (and the Fantabulous Emancipation of One Harley Quinn) (2020) and was their highest rated movie together. They have not worked together since Birds of Prey (and the Fantabulous Emancipation of One Harley Quinn) (2020).