Pinkie Pie and Cheese Sandwich team up to throw the Cakes second foal shower combined with Poundcake and Pumpkincake's Cute-ceañera.

Here's a full character list
Cupcake
Carrotcake
Pumpkincake
Poundcake
Apple Bloom
Scootaloo
Sweetie Belle
Princess Twilight Sparkle
Applejack
Fluttershy
Pinkie Pie
Rarity
Rainbow Dash
Cheese Sandwich
Spike
Rumble
Diamond Tiara
Silver Spoon