Kylie Jenner turned to lip fillers after she was ridiculed by a boy.

The 23-year-old make-up mogul has admitted to feeling insecure during her younger years after a bad kissing experience.

"My love for make-up started with my insecurity with my lips. And I didn't ever think about it until I had one of my first kisses," she shared. "A guy said to me, 'Oh, my God, you're such a good kisser, but you have such small lips,' or something like that. And then…, from then on, I felt… unkissable."

Kylie first started using fillers during her teens and she's recalled desperately wanting to have "bigger lips".

She said during the Keeping Up With the Kardashians TV reunion: "I took that really hard. Just when a guy you like says that, I don't know – it just really affected me.

"I just didn't feel desirable or pretty. I really wanted bigger lips. I would overline my lips with lip liner just to create the illusion of bigger lips. And then finally I was like, 'This lip liner isn't doing it', and I ended up getting my lips done."

Kylie has now moved on from the bad experience, and is reported to have recently rekindled her relationship with rapper Travis Scott, with whom she shares daughter Stormi.