I have sympathy; I'm a 34E, though it isn't so bad, partly because I'm tall and have broad shoulders as well, so it looks in proportion. I still have the clothes problem though cos I have a small waist (stupid shoulders also make it difficult for me to wear even bravissimo shirts, but most people with big boobs find these great.) I like my figure, the only thing I'd change would be to have the same proportions but smaller all over so I could buy clothes more easily.
I get the pervy old men thing too, grrr, I used to find it vaguely flattering, when I'd just got a nice figure after being a fat shapeless 13-year-old, but now it's just annoying.