Cute/Trendy Style Bras in DD?

Where can I get some affordable and cute bras in a 36 DD I've looked a lot on the internet and haven't had a lot of luck. BTW Why does everyone seem to ume just because one is a DD means they're plus size? Just curious I'm a DD and a size 8 and they're real, am I just an oddity? I just noticed that browsing other questions that everyone seems to ume DD means plus size not that there's anything wrong with being plus size I'm just curious why bra size should ume an overall body size... oh well, any help would be great. (BTW tried the basics like victoria secret, frederick's, figleaves, DKNY etc)