The 16-year-old reality TV star says she doesn't buy into reports of Justin's wild behaviour and despite the pop star having a tumultuous year - including complaints from his neighbours and heated arguments with paparazzi photographers - Kylie believes he is a good person at heart.
Speaking to E! News at the premiere of Justin's new documentary 'Believe' in Los Angeles this week, she said: ''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.
''He's really cool. He's humble.''
Kylie - who is the daughter of Kris and Bruce Jenner - also admitted she has a crush on her 19-year-old pop, adding: ''Doesn't every girl think he's cute?''
The 'Keeping Up with the Kardashians' star and her rumoured beau Jaden Smith are close friends with the 'Confident' singer and even joined him on his recent 'Believe' tour in London earlier this year.
While Kylie has played coy about her alleged romance with Jaden, 15, she does count him among her closest friends.
She previously said: ''He makes me laugh and he is a great dancer.''
What's new in the music world this week?
Listen to Alex Bayly performing 'Animal'.
Two weeks ahead of Independent Venue Week, Dry Cleaning made 'Britain's Best Small Venue 2015' (NME) the second port of call on their 2020 tour.
'Leave Home' was released on this day (January 10th) in 1977.
For their last gig of the year, The Libertines came back to their adopted hometown of Margate to finish off their latest tour.
Celebrating the birthday of David Bowie with his most legendary songs.