Here is how Arthur and Cecil fillynapped Baby Emerald in Emerald's Grand Day Out.
Arthur and Cecil arrived in the Carousel Boutique and got their disguises ready.
Arthur: How do I look, Cec?
Cecil: Hmm, Not bad, Artie. Do you think Rarity will suspect us in this?
Arthur: Nonesence, Cecil. Our disguises are perfect. (knocks on the door)
Arthur: Greetings, M'Lady. We're here to take pictures of your little bundle of joy.
Cecil: And we're from the baby photograph company.
Rarity: Well, I didn't expect you two instead of the Dover Boys. But if you insist.
Later inside, Arthur and Cecil prepared the smoke bombs on the fake camera.
Baby Emerald: (happy gurgling)
Cecil: Watch the Ducky!
The smoke bombs exploed into a foglike smoke as Arthur and Cecil took off with Emerald.
Rarity: (coughs) What kind of camera is....? (notice that Emerald is out of site) Oh no! It can't be! She isn't! (faints)
Sylvia came downstairs as soon as she did.
Sylvia Marpole: Rarity! What happened?! (notice Emerald's disappearance and gasps) Oh no!
Then, The Dover Boys, Tom, Dick and Larry came as Rarity is about to awake.
Tom: Hello, Rarity. Sorry we're late.
Dick: I hope we didn't keep you waiting too long.
Larry: Is your baby ready for her picture taking?
Rarity faints again.