Luna "catches" a Celestia.

"Hai itty bitty! Love you! How's my introverted dark and gloomy sister's day today in Canterlot?"

Luna see's a shrunken teleported Celestia onto her chest to rag on her "size" compared to her sister's. She's disappointed, but doesn't really care. Last is Cadance and maybe Chrysalis as an extra, but her's will involve a bad end as she'll catch each Princess in her chest and mind control them.