There are also many stars who don't often appear in the public eye during pregnancy. Maybe they were not pregnant in July and August before they appeared, but in the early stage, so many viewers will wonder why they are so slim. This is also a possibility.
Of course, for some stars, they usually pay great attention to exercise and slimming, so they also need to strictly control their bodies, and during pregnancy, I believe they will also exercise properly and will not let themselves relax. This is a requirement for myself and for this profession. ?
There is also a physiological factor. Some people are not pregnant too much. It may be that their fetus is on the upper plate, so the stomach is not too big, and the fetus on the lower plate may make people look pregnant, so this varies from person to person and is not universal.