Board Thread:Spoilers!/@comment-26159109-20160119214649/@comment-24674051-20160202193418

Unless they do some major time jumping, I don't see them showing Belle Pregnant, at least not as pregnant as Emilie appears. (and quite frankly, she seems to be handling the added weight quite well.)   They'll most likely use a combination of camera angles, body doubles, and stock footage, similar to what they had to do with Snow Drifts/TNPLH for the Snow flashbacks.

Now, I would not put it out of the realm of possibility that they will do a major time jump at the end of the season to account for a Rumpbelle birth (assuming they do bring a Pregnant Belle into the story). But not at this point of the story.