A light and lovely read. Funny at minimum, hilarious at best! And surprisingly touching in places. 
 I found the differences in style of diary entry for each character quite refreshing, if a little confusing to begin with. The characters themselves were reasonably believable though Oscar was hard to wrap my head around and Dora annoyed me as most real girls her age annoy me also! Mo was the favourite of the three for me; fairly rounded and the most relatable of them all. She underwent the most development in the book as well, pleasingly - since the others I found to be a bit lacking in that sense. 
 That said, not every novel HAS to be a journey or some great lesson in life. For what it is, this first fiction novel of Ms French was delightfully easy to get through, much the same as a delicious girly night in with pizza and ice cream.