US pop star Aaron Carter has ended his engagement to model/actress KARI ANN PENICHE - just nine days after proposing. The CRAZY LITTLE PARTY GIRL hitmaker, 18, asked former Miss Teen USA and Playboy model Peniche, 22, to marry him on stage at the Playboy Hollywood Comedy Tour in Las Vegas, Nevada, on 19 September (06). After Peniche accepted, the couple announced plans to wed in the next six months. However, Carter has now released a statement to American magazine Us Weekly, admitting he is too young to marry. He says, "I got caught up in the moment and proposed. I then realised it was a hasty thing to do and I am not ready for marriage quite yet." Peniche previously dated Carter's older brother, BACKSTREET BOY NICK CARTER.