I’ve bought a couple of cute notebooks and cards on several occasions, when I came to realize that they were all made by the same illustrator. So I guess I can call myself a fan of her work ;) The person in question is called Lilidoll, she lives in France and makes the most amazing illustrations of girls, fairytales, nature and animals.
Lilidoll has created stationery designs for Betty & Cie, so you might find some of those items in a (web)shop nearby. At Papierdier (a Dutch shop) the Betty & Cie postcards are available at reduced prices! And Blueart from France offers a nice range of Lilidoll items as well.