PHOTO: Michael Jackson's Eldest Son With Girlfriend

MICHAEL Jackson's eldest son Prince strolls through a theme park on a day trip with his girlfriend Niki Berger - and his sister Paris, 13, and brother Blanket, nine. Tender Prince, 14, kept close to his sweetheart before they braved a series of hair-raising rides at Six Flags Magic Mountain in Valencia, California, US. Obviously wanted to Thriller.