Here's how Cadance and Shining Armor's news goes in Thomas and Twilight Sparkle's Adventures with The Avengers.

Cadance: Twilight, I have some news.

Twilight: What is it?

Pete: Wait a second. Cadance, your stomach is plump!

Henry: Wait a minute, is it happening already?! Are you 2...

Cadance and Shining Armor: We're having a baby!

Duncan: [as Hamilton] What?! WHAT?!

Thomas: What nothing! This is great news! Twilight's gonna be an aunt!

Twilight: I know! And this is the best day of my life!

Princess Luna: And there will be a new Princess in Equestria, and will makes us aunts too!

Princess Celestia: Indeed it will, younger sister.

Nick Wilde: But wait! Who are you gonna call her?

Cadance: I'm not shure, Nick. But will think of something.

Sir Handel: I hope it will be a good name.

Cadance: Don't worry, Sir Handel. I'm sure it will.

Sir Handel: I hope so.

Hiro: Me too.