I didnt think that the Egg sizing was very generous....I have been struggling to find 'bottoms' that will fit me. Tops dont seem too hard to find, but finding a comfy pair of pants or a nice skirt seems to be torture! I find that normal PP stuff in XL is a wee bit snug, but the One From the Heart range seems to be a better fit.
At the moment on TM there is a lady selling Plus Size maternity clothes - they seem nice, but a bit on the expensive side for me.