I love all the work by Adolie Day. One of my favourite illustration books is called Sweet Illustration by Monsa and Adolie along with some other amazing artists feature in it. I had been looking for this book for months. It is continually out of stock with Amazon and then I randomly found it at a newspaper shop in Barcelona airport. I was over the moon.
Some of my other favourites who are in the book are Camilla Derricio for her crazy and colourful pieces. I found the following images on her site as these ones do not feature in the book but I think they are weirdly cute.
Marie Blanco for her beautiful ethereal images