Topshop, Whistles, Missguided and Lipsy all have chic one shoulder numbers which would be perfect for an evening event.
She won a junior talent contest at the age of 15 and decided to become an actress.
Person of Interest first aired back in September 2011 and each of its four seasons have received critical acclaim.
The star's showstopping dress exposed plenty of her decolletage as the sash-style number cut across her chest.