Rule 34 Dev - anthro bottomwear briefcase clothing female footwear hair half-closed_eyes hand_behind_head holding_briefcase holding_object hooves horn legwear looking_at_viewer mane mouth_closed narrowed_eyes panties pleated_skirt pose school_uniform shirt skirt smile smiling_at_viewer solo standing stockings topwear underwear unicorn_horn uniform baron_engel friendship_is_magic hasbro my_little_pony mythology sweetie_belle_(mlp) equid equine mammal mythological_creature mythological_equine unicorn 2018 hi_res signature story story_at_source story_in_description traditional_media_(artwork)|17164620865