Oooh, nice. No idea on sizing but I always go and pet things at the Reiss store - they use such luxurious, lovely fabrics and fibers.
Only thing that would concern me is the angora content. It will make the sweater very soft but, in my experience, also very sheddy. Especially if you are like me and wear a lot of dark colors, the white fibers will be quite noticeable. My biggest problem was that they got all over my dark coats. That is why I got rid of all my light colored angora blend sweaters.