i had my op on wednesday and i was unsure of sizes either 340cc or 380cc in the end i went for 380cc and they look so natural im happy i was the same as you didnt want them to look too fake but they really dont. Are you having overs? Before the op i was roughly 34 Aish i cant really say as i always had really padded bras with gel in 34B! Im the same hight as you, and now my sports bras are a 34 DD/E to have a full cup thats with little swelling i would say ill be a 34 D/DD in the end xx