I've been buying clothes from AliExpress fot 5 years and I am almost never disappointed. If I am unsure about the sizes I send the shop a message and the seller helps me make a decision. There are certain shops that I like such as EAM, UMI MAO, XITAO and Cheerart. Recently I purchased archery equipment from Sanlida. All of these shops have great customer service and I recommend all of them.
Tip for consumers: Be careful with sizes because they are based on Asian sizes and send the shop a message when unsure.