My Little Pony: Equestria Girls: Sleepover Surprise: Book 6 by Perdita Finn
Explore the magic of friendship in a whole new world!
Twilight Sparkle is delighted to be invited to a sleepover with Rairity and all her friends. But the Shadowbolts - Sunny Flare, Sour Sweet and Sugarcoat - are deteremined to sabotage Twilight's friendship with the girls. Will the sleepover surprise be a dream ... or a nightmare?