Pretty Girls, Ugly Faces is a photo fad in which girls take pictures of themselves while posing in an unflattering manner, making a silly face or performing a physically strenuous activity.

The single topic Tumblr blog Pretty Girls Making Ugly Faces launched on September 26th, 2011, featuring nine photos of different females making unattractive-looking faces by manipulating their mouths and necks. Throughout 2011, the blog was regularly updated with the bloggers’ own photos as well as user-submitted images before going on a hiatus in June 2012.