We've mentioned Platinum Fashion Mall already but this is a very large, indoor fashion mall made upof hundreds and hundreds of stalls selling all manner of fashion items and accessories but the beuty of Platinum Fashion Mall is that you can also buy individual items as well as wholesale. Platinum started off big but due to its success, it has recently expanded so it's even bigger now.
Bobae market is an outdoor market and is one of the original wholesale markets in Bangkok and Thailand. It's not open for very long each day and you can only buy wholesale but now there is Bobae Tower nextdoor which is also indoors and also allows for individual items to be bought as well as wholesale numbers.
Bobae is not far from MBK Shopping Centre where you can find a number of clothing stalls which will also be able to provide you with wholesale fashions.
Chatuchak weekend market has long been a favourite of tourists coming to Thailand but you are limited to weekends to find what you are after and the sheer size of Chatuchak can make it difficult to find what you are after.