DESCRIPTION
This was an old image of Twilight Sparkle when she was a unicorn. This was before Equestria Girls existed, that's why she has this different hairstyle.
https://mega.nz/file/0ykUkSCL#3ST9_ncxgCuqlypt3FBzqViLiR4dPJ2SdPLOGLiTTYw