Looks like Smolder isn't the only friend of Spike's who's gained weight. Spike's friend has come to Ponyville, and she also is now a big gal. It seems at some point she overdid it with food in Ponyville and new food that's being sold in Griffonstone. Yet even a few hundred pounds won't keep this cat birb from delivering the mail. In fact, she's gotten quite use to flying despite the weight she's carrying.
So now she chats with Smolder about their similar predicament while enjoying their trip from the ice cream shop with their best friend Spike.