So I just finishe reading one Princest and there was mention of impregnation and that and I just started thinking:

What if the only posible way for a pony to be born as an alicorn is to have two alicorn parents?
What if Luna and Celestia have been a secret couple for years and one of them got pregnant with Flurry Heart?
What if they asked Cadance to feign her pregnancy, adopt Flurry Heart and say that she was hers to avoid problems with society?

Or:

What if Cadance had an affair with either Celestia or Luna?

GOOD THERORY!!! I see Cadence and Celestia as Flurry Heart's parents.

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Now that you two mention it...
I would read a story of that.

Shit that just gave an good idea yet i'm working with darf on a project. Grrrr.

5320906 I could to I mean that sounds pretty scandalous