they are all sorts of wacky but I think go down a size.. especially in the belle's. they tend to stretch out pretty fast once you wear them, even the first wearing.
honestly though, I have 12 pairs and they all fit differently. some are 29, some are 30. I have one pair of savoy trousers size 30 that fit pretty well but I'd like them a little tighter in the legs so I got a 29 in them and they are WAY too big. huge. literally falling off. I'm taking them back. it makes no sense. most of my 30s fit a tiny bit big and my 29s fit snug-ly annnd I can wear a 31 in sevens. does that help at all?? probably not. go try them on oh how I love WR