Kylie Jenner says becoming a mother was ''one of the most beautiful moments'' of her life.

The 21-year-old reality star gave birth to her daughter Stormi on 1 February this year, and Kylie has admitted that the experience was a life-changing moment.

She said: ''Creating life was one of the most beautiful moments of my life. It's hard to explain why. It's just when you've experienced it you understand.''

The make-up mogul has also opened up about her definition of beauty.

In a newly released video for Vogue Australia, she explains: ''Beauty to me means being yourself. Beauty to me means Stormi.''

Kylie added that she wants to encourage her daughter to experiment and to find her own sense of style.

She shared: ''A beauty lesson that I want to pass on to Stormi is probably just be carefree and experiment and let her experiment with her look and who she wants to be.''

Meanwhile, a source recently claimed that Kylie and her boyfriend Travis Scott have been discussing marriage.

The businesswoman and Travis, 26, have become ''inseparable'' over recent months and although they're in no rush to tie the knot, the loved-up duo are already planning for their long-term future together.

A source explained: ''Kylie and Travis have been inseparable lately, and their love for Stormi just seems to bring them closer every day.''

Kylie was previously involved in a turbulent relationship with rapper Tyga, but her mother Kris Jenner is thrilled to see her settle down with Travis.

The insider said: ''When Kris sees Kylie and Travis together, she's convinced they're on the right path.

''At first she worried about Kylie starting a family so young because she felt she had no say. Kris knows Kylie does what Kylie wants, so Kris just had to hope for the best.''