So, little story behind this: I made a cover art for a fanfic, and it involved using one of ShutterflyEQD's vectors (Twilight in this exact same pose). However, despite their DeviantArt description permitting use of artwork with credit, their artist tag here is still registered with the "No Edits" restriction. Thus, I made this vector to replace the one in the cover art, now making it possible to upload said cover art here.
Also, despite what my image history suggests, this is my second vector of a pony. I do plan to upload my first at some point, but that one needs a companion image I haven't yet created.
Pose is seen in "School Raze — Part 1", at around the 4:32 mark.