Try LaRedoute.com
They have perfectly respectable basic cardigans in sizes than run laughably, or heartbreakingly, small, depending on your size, budget, and how many of them you may have put in the dryer because you missed a previous post of mine on the subject.
Anyway, if it happens that you see one there you like, get a size larger than you think you should get, even if you don't plan to put it in the dryer, UNLESS they happen to have any of those big fluffchunker angora blends with the single button left, and in black, in which case get your regular size, since those are the exception, but most of their cardigans, in my experience, run, I repeat for emphasis, Small with a capital S!