Long Tall Sally might be of help, they have stores in both the US and the UK. I went to their physical store in London once, it was really weird to be around people around my height for a change (6'2").
I can fit into a M&S size 22 with my build (bearing in mind I'm 42" underbust), so I get a lot of my clothes from there, but Long Tall Sally has been fantastic for things like shoes.
I can fit into a M&S size 22 with my build (bearing in mind I'm 42" underbust), so I get a lot of my clothes from there, but Long Tall Sally has been fantastic for things like shoes.