Me too! I thought it was just me! I'm so glad I found this thread. Good to know that my curls aren't alone in defying gravity/weight.
When my hair is shorter, it's more wavy than curly pattern-wise.
When my hair is long enough, then I get ringlets (except for the back at the very bottom, which is almost always straight - anyone else have some of that).
Just another good reason to keep growing my hair long - if my curl pattern only improves with length, I think I can ignore the urge to chop it all off in the middle of the summer when it is so very hot.