Can I create a Fifi Lapin doll, without infringing copyright/trademark laws?

I want to make a Fifi Lapin doll and Possibly create some to put on Etsy. But from a legal standpoint is there anything stopping me from doing this? I can't find any information about who created her, except a blog that says "All images by Fifi Lapin on this site remain the copyright of Fifi Lapin"