The article, "China: History of Dress" provides a concise seven page overview. You may wish to look at more specialized articles such as 'Footbinding'; 'Mao Suit'; and "Qipao" among others.
Changing Clothes in China: Fashion, History, Nation
The article, "Japanese Traditional Dress and Adornment" provides a concise six page overview. You may also wish to look at the specialized article, "Kimono".
Provides an overview of the past 200 years of Japanese clothing. Also situates this history as part of global history and discusses various theories analyzing Japanese fashion.
While much of the emphasis of this book is on the garment itself, it does have a moderate amount of text discussing clothing in its cultural and sociological setting.