Raca Kids is a great kids wear shopr from new borns to 16 years old. Visit there and you will be suprised. :)
Europe
Nişantaşı
Nisantasi is a district located in Europe sight. It is where you can find all luxury brands.
Europe
Grand Bazaar & Egyptian Bazaar
You can find anything from clothing to jewelry, Turkish delight to silk carpets.
Asia
Kadıköy
Kadıköy has a bit of everything. You can shop for clothing , Turkish delight, antiques,electronics
Europe
212 Outlet
If you are staying at European side, you can go 212 AVM. They have many brands with outlet prices.
Asia
Optimum Outlet
If you are staying at Asia side, you can go Optimum AVM. They have many brands with outlet prices.
Asia
Viaport Outlet
If you are staying at Asia side,.Also very close to Sabiha Gökçen airport. They have almost all brands including designer brands. Please check whether before visiting.
Europe
Merter AVM
Merter is the capital of Europe's Clothing. It is where you can fins cheapest prices but there are thousand shops and it will take days to see them all.