The 16-year-old says she doesn't buy into reports of Bieber's wild behaviour and despite the pop star having a tumultuous year, including complaints from his neighbours and heated arguments with paparazzi photographers, Jenner believes he is a good person at heart.
"He's always been so nice and he's such a good guy despite what everyone says about him. I think he's amazing. He's just been a great friend," contactmusic.com quoted her as saying.
"He's really cool. He's humble," she added.