Princess-napped (A One Direction Fan-Fic

Krystol, Julianna, and Jasmine are half-sisters. They all have the same dad but different moms. These girls all live together with their moms and with their dad. Why did their moms for give their dad, well its because he is the king. These princesses are living their lives, when they get kidnapped. Who do they get kidnapped by? One Direction. Only they kidnapped them for the publicity, but will these princesses turn out to be to much to handel?