The beloved cross-eyed mare has been made an Honorary Princess by Princess Celestia herself in commendation for her kindness, helpfulness, dedication and optimism despite all the neigh-sayers and trolls. And a party is being held in her honor at the castle, celebrating Derpy just being Derpy. That other princess--Twiley, is it? --is so happy her friend is getting the love and respect she deserves.
: YAAAAAAAAY! I'm a PRINCESS! Uh, well, honorary at least... DERP!