Flopsy, Mopsy, and Cottontail

Flopsy, Mopsy, and Cottontail are Peter Rabbit's triplet sisters.

Flopsy
She was voiced by Margot Robbie in the 2018 film.

Mopsy
She was voiced by Elizabeth Debicki in the 2018 film.

Cottontail
She was voiced by Daisy Ridley in the 2018 film.