For all you shopaholics not yet used to the peace and quiet of Sunday's here in Switzerland I just read about a Fashion Factory Outlet mall that is now open on Sundays from 09:00 to 17:00 starting April 3rd today.
Never been there myself so I don't know what the prices are like but it looks like they have lots of the usual brands.
http://www.fashionfish.ch/anfahrt/