My measurements do not correspond with either of their size charts (UK or US). I just guessed that I was an 8 because I have been an 8 in the past in UK sizing. I think I'm a 4 now since they said they "added" a size 2, meaning it wasn't there previously.
Oh well, I won't be ordering from there any time soon. I'm with Kari and Tam, I'm not that enthralled with the spring range. I have a strong preference for cold weather clothing though, so perhaps that is why. I also prefer their prints and colors in winter and autumn. More geometric and modern. Spring is too pastel and flowery for my taste.