At Mean Girls MainStore you can find really good group gifs!
Dress: Group Gift Pink Hoop Dress (Free)
Corset & Hotpants: Group Gift Cherry (Free)
Lingerie: Lucky Santa Chair "Candy Cane Lingerie" (Free)
Glasses, shirt & shorts: Unfortunately no longer available for free, now it costs 50L, "Lost Outfit"
Skin: Mean Girls Kinsey Special Skin, really good skin, the box comes with four versions and you can find it for free at Mean Girls MainStore! :)
Hair: Hair – D!va Hair “Chiharu” (Group Gift, free to join) HERE!