I realize that compared to the states, we have very few choices for plus size clothing here in my country. Some looked like they were made for older women and some have sizes that are simply not realistic for bigger women. Really, I couldn't even find a sports bra for plus size women who dreadfully need the right support and apparel for working out. It just doesn't make sense why nobody is making bigger sizes. Most of the plus size I see on direct selling companies are only up to 3XL but their 3XL looks smaller. Being a big woman in Asia is indeed stressful.
I would suggest you to check CurveGirl. It is an initiative to bring fashion democracy by liberating women from size & height expectations and motivate them to celebrate their body and live healthy.