Is 330cc Breast Implants Too Big for a Petite Frame?

It is very important to communicate your size goals with your surgeon.  In my practice, the use of photographs of “goal” pictures (and breasts that are too big or too small) is very helpful. I have found that the use of words such as “natural” or “C cup” or "fake looking" means different things to different people and therefore prove unhelpful.
Also, as you know, cup size varies depending on who makes the bra; therefore, discussing desired cup  size may also be inaccurate.
I use  intraoperative sizers and place the patient in the upright position to evaluate breast size. Use of these sizers also allow me to select the press implant profile (low, moderate, moderate plus, high-profile) that would most likely achieve the patient's goals. The patient's goal pictures are hanging on the wall, and allow for direct comparison.
I have found that this system is very helpful in improving the chances of achieving the patient's goals as consistently as possible.
By the way, the most common regret after this operation, is “I wish I was bigger”.
I hope this helps.

Implant size is difficult, but as long as you are in the right ballpark it will be ok.

In my experience, someone with your frame will end up with a large B to small C with 300cc. 325 to 350 should be in the C cup range.

Good luck.

I find questions like these to be interesting , because without seeing you none of us can really give you an accurate answer. If you have found a qualified plastic surgeon and he feels this size is adequate I think you should trust the decision and go with it.