This book deconstructs various styles that are hallmarks of style icons such as Grace Kelly, Marilyn Monroe, Audrey Hepburn etc. It encourages people to adopt a different style depending on their mood. While the deconstruction of the styles is interesting and well thought out, my problem with it is that to me style is not really about mood - it is about personality. Your style should reflect the person you are rather than looking like a cheap imitation of someone else. So, if someone's natural style is "gamine" nothing prevents them from dressing say "avant-garde eccentric" or "cutting edge cool", but the problem is they may also look like they are playing a part in a play rather than being themselves. This can be seen in the different "costumes" Trinny and Susannah have worn for this book. I call them "costumes" because in these clothes their own natural style (which is excellent) has been swamped and they look instead like fake Marilyn Monroe's and fake Grace Kelly's (and, I infinitely prefer the original Princess Grace and Marilyn Monroe). The book might be more helpful for those who are still trying to find their natural style.