Sloane Sisters

Style. Sabotage. Sisterhood.

When Cate and Andie Sloane''s Upper East Side dad met Stella and Lola Childs''s British-model mom, nobody thought a transatlantic relationship would last. But then their parents drop the M-bomb—marriage—and it looks like Cate, Andie, Stella, and Lola are going to be one big happy family. Well, big anyway. Meet:

Cate Sloane: She dominates the ninth grade at exclusive Asht...