Awkward Age

I've decided I'm at an awkward age.  Too young to be old and too old to be young.

Went shopping today.  (Which I rarely do.)  Looked at some clothes.  Now, I understand that it's summer and people want to be cool.  But seriously....doesn't anyone make anything to wear that covers these getting-saggy-upper arms without making me look completely old-fashioned and out of touch?

I may be 60 but I'm still young at heart.  I don't want to dress like an old-old lady.  Nor do I want to dress like a 20 something.  Isn't there a happy medium out there somewhere?  For a short person that's more round than she'd like to be?