Does anyone have the sauce? I'll post what I have.
I don't know what the comic is called or who drew it, but I know the lady on the left is from Gravity Falls
I'm guessing it's Gravity Falls fandomshit from Tumblr, but I haven't a clue as to the sauce.
The sauce is an artist called Doublepine. Famous for drawing many quality fanarts of Gravity Fall.
http://doublepines.tumblr.com/post/78332212029/pinemoments-1