Marilyn Monroe Deluxe White Halter Dress Costume

I'm a size 14-16. What size should I get for this dress?

I wear a size 14 40c cup. What size you recommend?

I’m a size 10/12 38 DD 5”6 what size should I order??

Hello, i’m 5.10 and 165lb but wear 34a cup should i get medium size or large? i’m afraid it might be to big fo me in chest