First photos published of actresses on the 'Ghostbusters III' set in Boston

The first photos of Kristen Wiig, Melissa McCarthy and Kate McKinnon as their Ghostbusters characters have been posted online.

E! shared an image of a serious-looking Wiig in a two-piece, plaid skirt suit, by herself and carrying a briefcase on the film's Boston set.

Also offering a behind-the-scenes glimpse is a snapshot of a bespectacled McCarthy in a black cardigan, leggings and glasses, followed close behind by McKinnon, who is wearing what appears to be goggles, a black leather jacket and baggy denim capri pants. McKinnon is also toting a silver duffle bag.

Directed by Paul Feig, the third installment in the supernatural comedy franchise is set for theatrical release July 22, 2016.