This is a beautiful story! I love it, I've read it several times, but I just can not help it, it's so cute! Thank you for sharing it with us, blessings!

I know its a early to choose considering I have 3 more stories to read(and that's not including the side stories), but so far, this one is my favorite. Before I name off the good, my only major problem with this story is, I pretty much predicted the twist a mile away. But, how this twist was revealed was very interesting(nice callback to "Princess Twilight Sparkle").
Now for good. Like the previous stories, the songs. I knew all but one of these songs(that one is th3 song that Twilight and Sunset when the latter finds out the truth). It also awesome to have Sunset AND Starlight in the same story, and didn't always know what would happen next. Bye!

Nice musical XD

I see a whole lot of movies inspires you on this story. I loved those movies.

I see a little Tangled I Spira tion with Sunset and Starlight. XD

An Alice in Wonderland quote!
And poor Twilight!

Angel, you naughty rabbit!
And NO PARTIES?! Poor Pinkie!
But she will get one party, so we're good!

Hey, AWOL stands for Absent WithOut Leave and it means leaving without permission. You may want to change that to something without negative connections.
Unless you're beinging sarcastic, in which case I'm a doofus. :P

Princess Snow Pea! That name is so adorable!

Yup. Saw that "Be Our Guest" number coming.

So they're twins...there goes my SunLight ship.

Is there any chance for there being a part 5? This was my favorite fan fiction series and its heartbreaking to see I end

That was great. A good finale.

Awesome! Please update the Swan Pony! Love AppleJack and Spike together!

That was beautiful and that's coming from a guy it nearly brought me to tears. The whole series was awesome from midnight dance to the end. AWESOME SERIES!