Here is how The Four Royalties arrived goes in Celestia, Indy and Anna.
Later, After Discord and the Smooze arrived, The Four Royalties came last.
The White Rabbit: (fanfare) Announcing the spirit of chaos, Discord, The Smooze and the Four Royalties! Princess Cornelia, Queen Georgina, Duchess Petunia and Empress Samantha!
Princess Cornelia: Hello.
Queen Georgina: Good to see you again, Princess Celestia.
Duchess Petunia: Such a beautiful night for a Grand Galloping Gala.
Empress Samantha: Isn't it wonderful?
Princess Celestia: Indeed it is, Samantha.
Princess Cornelia: And I see you brought your adorable babies!
Princess Celestia: Yes, It's they're first time in the gala.
Prince Indy and Princess Anna: (hugging their mommy)
Discord: Oh, Celestia, They are so cute. May we?
The Smooze smiles.
Princess Celestia: Sure thing.
Discord: Do you here that, Smooze. (magically barrow the twins) We get to play with these adorable little twins!
The Smooze jumps excitedly.
Princess Cornelia: You sure take their appearances very well.
Duchess Petunia: So, Tell us how're your twins were born.
Princess Celestia: Well, Petunia. It was a long time ago just after the great boat race.
The flashback begins.
Princess Celestia: (was pregnant and packing her bags)
Duck: Almost done packing, M'Lady?
Princess Celestia: I'm just about, Duck. I just needed to pack my... (wailed after the felt of her pain)
Duck: Celestia? Are you alright?
Princess Celestia: Duck, I think it's time!
Duck: Oh my! We better get you to the hospital right away!
Princess Celestia: (as her water broke) Oh dear!
Princess Sharon: Mother?
Princess Celestia: Don't worry about me, Sharon. I'll be fine.
Duck: We'll be at the hospital! We'll see you soon.
So they left to the Ponyville Hospital.
At the hospital.
Dr. Stables: Okay, Your highness. Nurse Redheart and I are ready to deliver your babies.
Princess Celestia: (breathing)
Duck: Keep breathing. You can do it.
Princess Celestia: (breathing) I'm breathing is best I can!
Nurse Redheart: Now, push!
Princess Celestia: (breathing and pushing)
Duck: You're doing fine, Celestia. Almost there. Keep pushing.
Princess Celestia: (wailed in pain and pushed)
At last, The babies were born.
Prince Indy: (crying)
Princess Anna: (crying)
Dr. Stables: It's a Colt!
Nurse Redheart: It's a Filly!
Princess Celestia: Twins!
Duck: Well done, Celesita!
Princess Celestia: May we see them?
Dr. Stables: Of course, Your Majesty. (hands the babies to their parents)
Prince Indy and Princess Anna: (opening their eyes for the first time)
Princess Celestia: (gasps with tears in her eyes) Look at them, Duck! They're looking right at us! They're perfect!
Nurse Reheart: Do we have names for them?
Duck: Yes, "Indy and Anna". After the state of the United States of America, "Indiana".
Princess Celestia: Indy and Anna are such wonderful names!
Prince Indy: (embraces his mother)
Princess Anna: (embraces her father)
The flashback ends.
Princess Celestia: And that is when Sharon and Yuna informed their friends about the news.
Princess Cornelia: Amazing!
Queen Georgina: Stupendous!
Duchess Petunia: Wonderful!
Empress Samantha: Lovely!