Rule 34 Dev - 1_girl 1girl 2013 ass back_turned book clothed clothing cutie_mark equine eyewear female female_only friendship_is_magic furry glasses hair horn horse looking_at_viewer looking_back multicolored_hair my_little_pony open_mouth panties plain_background pony presenting presenting_hindquarters purple_eyes purple_fur purple_hair school_uniform schoolgirl_uniform shirt signature skirt solo stockings terrabutt twilight_sparkle twilight_sparkle_(mlp) underwear unicorn upskirt white_background|451887