The Overwhelming Outfits Pack includes:

Marching Idol Gear:
The following item will be added: Marching Band Notes
The following will be added to the Workshop and Makeup Room: Striped Mini-Hat, Sparkling Earring, Maiden of the Plateau, Marching Idol, Striped Garter, Side Drill Ponytail

Chocolate Mint Lover:
The following item will be added: Chocolate Mint Diary
The following will be added to the Workshop and Makeup Room: Chocolate Mint Hat, Ice Cream Earring, Chocolate Mint Circus, Chocolate Mint Angel, Chocolate Mint Boots, Feminine Knot

Happy Geisha Set:
The following item will be added: Kimono Encyclopedia
The following will be added to the Workshop and Makeup Room: High-Grade Hairpiece, Sakura Paint, Kimono Bikini, Petite Geisha Dress, Two-Toe Slouch Socks, Geisha Hair