Does anyone know how Reiss dresses size up? I really love print on one (www.selfridges.com/GB/en/cat/reiss-esmerelda-graphic-print-crepe-dress_R02103311/?previewAttribute=NAVY PRINT), I'm usually a 12 but I have a 4 month old and a stone left to lose plus another stone from my last baby. Is Reiss usually flattering, or is it designed for tall skinny people rather than short pear shaped ones?