Talk:My Little Pony Equestria Girls/@comment-10265857-20130709174121/@comment-11159205-20130709175328

Celestia might be aware of Zecora's existence from some of Twilight's letters, and possibly due to the reputation that Zecora has built up.

But I can't reall a scene having the two interact with each other. We might have heard something more about this had Zecora been allowed to be Twilight's mentor in Ponyville like Faust intended to do at some point.