It's a problem because there's a chance that the news of Gyokuyou's pregnancy has leaked, and they've been hiding that because of the risks of that news being discovered. To explain more: the clothes the salesman brought were clothes that tightened around the chest, not the stomach (which would be bad for her as her pregnancy progresses.)
That's why MaoMao suggests they ask if they have any other clothing types, especially that even if it's a coincidence, they might realize that Gyokuyou is pregnant anyway because she normally wears clothing that tightens around the stomach.
Ohhh so you’re saying the salesperson knew she was pregnant that’s why he offered clothes that’s tight around the bust instead of the stomach. But they want to buy clothes that around the stomach to hide the fact that she’s pregnant? I’m confused
More or leas yeah. There’s no telling for sure if the salesperson actually knows, but buying clothes that tighten around the stomach as Gyokuyou usually wears those is like a precaution to keep the news of pregnancy leaking either way.
So I am confused. What is wrong with the clothing choice that the salesman brought?