Madelaine Petsch bundles up in sweats and a heavy coat as she takes a walk with her pup

Lili Reinhart and her Riverdale co-star Madelaine Petsch are bundled up

Lili Reinhart joins Riverdale costars Camila Mendes and Madelaine Petsch for Powerpuff Girls costume

Lili Reinhart stays warm in a brown coat as she bumps into her Riverdale costar Madelaine Petsch