Why was Celestia so surprised when a baby Alicorn was born? It seems like basic genetics, right? Unicorn horns and Pegasus wings are dominant traits as shown by the Cakes; and with an Alicorn mother, wouldn't they be dominant here too? So what reason did she have to be surprised? Unless this has happened before, with a different result.

Have you ever wondered where Celestia got a baby dragon?
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"Citizenship for all dragons living within the boarders of Equestria."

The young mother looked at the princess, flabbergasted. "You're kidding, right?"

The princess looked on stoically.

"You expect me to sell my baby for citizenship?" The mother enunciates, getting more confused and enraged by the second.

"Have you ever had someone tell you that you can become anything if you set your mind to it? That a little hard work and faith can get you where you want to be? That anything is possible?
Well I'm here to tell you...that isn't true."

"Um, hello. My name is Starlight Glimmer, and I am a reformed villian."

Sunburst's and Starlight's first public speeches.

Celestia's rein resulted in a 1000 years of peace in equestria. Did you ever wonder how though? And for that matter, was she always really alone in solving the problems?
Come meet the Reincarnates. They may appear many times, but the same pony and conflict you will never find.