Are 460cc XHP considered a large implant? I'm 5'5, 130lb & a 32b.

Thank you for the question. Everything is relative: a 460 cc breast implant may be large for a petite patient.  On the other hand, it may be too small for a larger patient.  There are many variables involved when it comes to selection of appropriate breast implant for a specific patient.
Ultimately, careful communication of your goals (in my practice I prefer the use of goal pictures, direct examination/communication in front of a full-length mirror, in bra sizers, and computer imaging) as well as careful measurements (dimensional planning) will be critical.

Given your concerns/questions, I would suggest that you spend additional time with your plastic surgeon, preferably prior to the day of surgery discussing these concerns/questions. Make sure that you are both the same page when it comes to goals and expectations. Generally speaking, the best online advice I can give to ladies who are considering breast augmentation surgery ( regarding breast implant size/profile selection) is:
1. Concentrate on choosing your plastic surgeon carefully. Concentrate on appropriate training, certification, and the ability of the plastic surgeon to achieve the results you are looking for. Ask to see lots of examples of his/her work.
2. Have a full discussion and communication regarding your desired goals with your plastic surgeon. This communication will be critical in determining breast implant size/type/profile will most likely help achieve your goals.
In my practice, the use of photographs of “goal” pictures (and breasts that are too big or too small) is very helpful. For example, I have found that the use of words such as “natural” or "C or D cup" etc means different things to different people and therefore prove unhelpful.
Also, as you know, cup size varies depending on him who makes the bra; therefore, discussing desired cup size may also be inaccurate. Again, the use of computer imaging has been very helpful during the communication process, in our practice.
3. Once you feel you have communicated your goals clearly, allow your plastic surgeon to use his/her years of experience/judgment to choose the breast implant size/profile that will best meet your goals. Again, in my practice, this decision is usually made during surgery, after the use of temporary intraoperative sizers.
I hope this (and the attached link, dedicated to breast augmentation surgery concerns) helps. Best wishes for an outcome that you will be very pleased with. 

The extra high profile style of your implant may create a larger, rounder look compared to some of the other styles. Only you and your plastic surgeon can decide what is a "large" implant. Based on your height and weight, it seems a bit large, but without photos I can't really make any recommendations. Ask your surgeon to be re-evaluated if you are not sure.Best wishes,Dr.Bruno