Hello ladies, I need help determining my size in the Marfy dress patterns. Normally in Butterick, and Vogue I wear/ use a size 12 pattern. I just discovered this brand Marfy please see these links so you know what I am talking about, http://butterick.mccall.com/f2141-products-10944.php?page_id=1225 , http://butterick.mccall.com/f1657-products-8400.php?page_id=1225 , http://butterick.mccall.com/f1729-products-8744.php?page_id=1225 . I love the dress patterns but I have no clue what my measurements are in centimeters, and certainly not what my size is. Can anyone help me determine what my size in these patterns would be? Thanks so much