One of my favourite illustrators and writers definitely has to be Emma Magenta. I came across her first book, The Peril of Magnificent Love by accident and completely fell in love with the drawings and story.
It's about a girl who falls in love with a boy (a three eared rabbit) and leaves everything including herself behind to pursue his love.
When she finally gets it, she is happy for a while, but then realises how much of herself she has had to change to be with him.
Eventually she learns to love herself first and becomes truly happy.
This is a lovely little book with a great message!
Learn more about Emma and read her thoughts on her blog.