theres a website called wallpart that is selling images from all over the internet as prints.

heres a post with more details: http://lambency.tumblr.com/post/124807323340/briannacherrygarcia-kirstendoodles

This was brought to my attention today by KeroTheStrange's journal http://www.furaffinity.net/journal/6910183/

I HIGHLY suggest no one purchases from this site and I encourage everyone to search their username and variations of their username and report any images found, if you come across something familiar and know who drew it, let them know too so they can handle it if they wish.