Dear Aunt Celestia:
I appreciate you offering me these tickets, however, I must inform you I will not be able to attend for personal reasons.

Oh, who am I kidding? You and I both know even if I did come, I'd be sneaking off with Captain Shining Armor during the opening musical and having wild, freaky, magical sex with him the entire evening, so I'm just going to drop the pretense. I'm thinking this time, it's going to be in cousin Blueblood's airship. I can't wait to see the look on his face after we're done. By the time we're through, he's going to have to commission a whole new one, because there's no way he's going to be able to get out all the stains we're going to leave. By the way, good luck with security.

Sincerely, Princess Cadence Notevil Goodpony.

No really, sincerely, your very horny adopted niece and alicorn of hot steamy love, Princess Mi Amore Cadenza.

Dearest Sister,

We cannot help but notice thou did not invite us to this Grand Galloping Gala.

We demand to know why thee would do such a thing? Surely we deserve the same love and affection as thou recievest, no?

Your enraged, and very confused sister, Princess Luna

Author's Notes:

These letters were written by SpacePaladin and SuperPinkBrony12, respectively.

In hindsight, given their completely unexplained absence, I really should have done a response from Luna and Cadance.