Reality TV personality Kylie Jenner says her elder sister Kendall had a terrible battle with "bad skin" when she was growing up.

Speaking to skin care brand Rodial's founder Maria Hatzistefanis, Kylie said: "I never had bad skin but my sister had really bad skin growing up. And the only thing that really helped her was to find a good dermatologist."

Despite having reasonable skin as a youngster, the 18-year-old reality TV personality believes the secret behind her flawless complexion is plenty of sunscreen and not touching your face too much.

"(My top tips are) sunscreen, washing your face every night, not touching your face as much and moisturise," she said.