Non maternity clothes in bigger sizes

[TakeMeToYourLiar]

I'm due at Xmas, so will need a coat

Will also need a baby wearing waterproof for school run.

I'm a size 28 normally so maternity clothes in my size are unusual and when I find them super expensive.

Would it be mad to buy a waterproof from
Jacamo with a chest 10 inches bigger than my normal bust, or wouldn't it work??

Have you tried the line from Yours Clothing? They're pretty reasonable.
But then saying that I just wore a bigger coat!