in Macau: Samsonite Outlet store and some other shops near the Ruins of St Paulo's Church. for brands, in New Yaohan at Avenida da Amizade . As to cosmetic, SaSa at Rua De S.Domingos No.16A-16C and GF,BF,MF., Travessa, Da Se No : 1-A; 1-B and many retail stores in Macau.
In Hong Kong:
Brands and luxury stuff: Central and Admiralty. There are many big shopping centers here.
Combined shopping areas: Causeway Bay: Jardine's Crescent is a open street market
Fake brands: you can get to Tsim Sha Tsui, such as Granville Road, Kimberley Road and Beverley Commercial Centre
Hope this helps. :-)