Germany has lots of great sites, good food... but fashion?? - hmmmm!
I go there a lot and it's pretty slim pickings. Also in recent years the Euro exchange rate means that clothing prices are rather higher than here in the UK (and the quality is often really grim).
C&A is still going strong over there, which may be a plus or a minus depending on your point of view! (I did get some really nice basic t-shirts there last year for just 3.95 euros each!)
If you find anything great, or anyone has any great suggestions, then I'd love to know.