Rarity: Yeah. You will scream, you'll make lot of noise then you'll cry because you messed up...again... because everything will be all burned, then I'll make another breakfast for us to eat after the awful you just did been put in the trash and the kitchen carefully cleaned. I just got a brand new fire extinguisher and stronger antiacids, so be my guess...
Sweetie Belle: Grrrrr! You are the worst sister ever!!!!
Rarity: Oh! Really? What bad sister would have took the time to get something already set for this morning exactly because of all this?
Sweetie Belle: Huh?
Rarity: I asked Applejack to make us a special breakfast for both of us. Look in the fridge.
Sweetie Belle: I... Really? *open the fridge* Yeah. It is there. It looks so yummy! Come Rarity!
Rarity: Glad you like it.... whatever it is. Now... let me sleep.... Oh! Sweetie Belle....
Sweetie Belle: Yes Rarity?
Rarity: Don't forget to clean your dishes afterward.
I don't know precisely why, but this is remarkably cute. Must be the nicely soft curving shapes and lines and the slight unkemptness of her mane. You managed to make the bright colour palette work unexpectedly well here. Well done.