Just enough to make it bell out a bit. Then it *Looks* like a "space-suit" to the uninitiated. In REAL use, it would see far more pressure difference and would be much more rigid - so no dramatic kneeling then. Here, it's just a pose for the camera with a fraction of a bar of pressure to work against.

Seems to me that the passenger suit just needs to be a giant bag. If it's ever called on, you WANT the passengers immobilised like with a giant form-fitting airbag. The Pilot's suit, however, requires him to be able to retain control of the core flight interface. So the Pilot suit will need the longest lead time, and maybe the passenger suit will be a de-rated version of the pilot suit to share manufacturing facilities. It'll just have cheaper gloves and joints, and less user-adjustability.