English Translation
Don’t act surprised.
surprised
adjective
surpris, étonné
© Larousse 2014
surprise
verb
surprendre, étonner
© Larousse 2014
I’m putting this here because I was confusing the terms. Surpris is the adjective, but the verb is surprendre (not supriser and there is no surprisé). So “surprises“ is correct because vous refers to a group of women. duh.