My original tumblr post was here. This painted image of the Bride of Frankenstein was originally posted on tumblr by Weird Woman and comes to us via pencilofdoom. It is sometimes attributed to Frank Frazetta, although I find that attribution hard to reconcile with what is apparently the signature in the lower right-hand corner. It also exists in larger sizes and slightly different colors elsewhere on the Internet, for example here:

Found at this old LiveJournal page.