There were parts of it that I loved including Isla Fisher and Gilmour Girls' Krysten Ritter. They were great and there were some good quotes. She has a Devil Wears Prada moment at the end, where everything snaps into focus for her about what matters (as hopefully does happen in a good story when a fashionista is dictating the moral center) and she makes things right.
Just a fun movie, fun chick flick. I thought it was better than He's Just Not That Into You, if that is any indication? :-)