Are these Labor Gowns allowed?

ab

I came across this small business in instagram that sells the most beautiful “labor gowns” 😍 but I was wondering are they really allowed? Who would I have to ask this too? I’m scared to buy one as they are not cheap..to then be told when it’s time that I’m not allowed to wear it when delivering 😩…I don’t know if this would contribute but I plan to have a epidural free labor this second time as I did with my first. (Natural birth)