You have to learn to love what you've got. It sounds pretty staright-foward, but really, that's the only advice you need. :]
I guess you could try to have plastic surgery
if you can afford it, to reduce your size.
I'm not sure about the kids things. My mum had an A cup, then when she had me she went to a B or C. Then she went to an A again. So you might return to your normal size. =]
Just feel good about yourself! A lot of people would love to be in your situation. Have you seen really flat chested people? That'd suck to be in their situation. Be happy that you've got a rack! :]