LEONARDO DICAPRIO may be messing around with a girl half his age. Leo is 38, and he's been spotted in Miami with Victoria's Secret model BARBARA PALVIN. She's 19. Oh, and JUSTIN BIEBER may have had her first. There were rumors about the two of them after they met at the Victoria's Secret Fashion Show last November. And Barbara's name was thrown around as a possible reason why Justin and SELENA GOMEZ broke up.