I haven't been on the site lately but went on this afternoon, and am happy to add something to what others have said, all very good advice.
As Bob mentioned, this is something you have to live with, so acceptance is best, surgery an alternative only as a last resort from my perspective.
If you take that first step of acceptance, it is not hard to find something that will fit your needs well, I had to do same about 4 years ago when doc told me to start wearing support for my developing breast and I am only 48B but continue to grow it seems.
Another good bit of advice, try before you buy! You can go to the good shops which will be happy to fit you and they will find a great solution but plan to spend a min of $50, or you can try the online or outlet shops, but I would only do so if they have a good return policy.
There are huge differences between styles and brands, and I went the route of buying different styles found on sale, but now have a dozen of so bras that I may never wear.
Once you find some bras that are comfortable and work well for you, you are set.
You will find there are different bras for different occasions, and some of the bras I wear in winter with heavy shirts on are very comfortable but provide more projection than I like in the summer.
A tee shirt bra is a better choice in summer as the molded cups really don't provide the projection that some of the others do as you will learn.
Unfortunately, you will be trying to learn what some of our wives did over many years in a short time, so best advice, is go to some of the larger chains like OHP or Lane Bryant and ask for some help- if you are a larger chest size like myself or some of the others, you may have to go to Catherine's, or some of the specialty shops to find choices that work for you.
Last point, acceptance is first step, nothing can happen until you accept who you are and be happy with the cross you are given, as many are not as lucky in health as we are.