Watch King Size for Free: How to Stream the Movie Online at 123Movies. . This sexy and very entertaining musical comedy shows the ups and downs of engaging in a 'ménage à trois'. When Vincent and Nicholas, a very much integrated and respected long-time couple, suddenly decide to live together with young Gabriel, they must confront the moral disapproval of their gay friends, a jealous sister, and practicalities like how to find a bed that's big enough. Filmed against a stunning Paris as backdrop, this all-out song and dance extravaganza almost explodes on-screen in a very French 'Joie de vivre'.