I love Ruth's palettes and fun characters. The design of the book is fantastic, and I think my son will really love the bold contrast in the images.
It looks like this is her first book, but she has lots of other delicious work!
It's been interesting reading to Oscar - I have a good selection of children's books, but many of them I have collected for the illustrations and haven't actually read them! Reading them now, I realise many of them are so very simple. (And also that a good rhyme is hard to come by!)