Kylie Jenner's body has ''completely changed'' after having a child.

The 21-year-old reality star and her boyfriend Travis Scott welcomed daughter Stormi into the world in February and though pregnancy took its toll on the lip kit mogul's figure, she doesn't mind.

She admitted: '''Pregnancy completely changed my body at a super young age. But I really don't care.''

As a member of such a high-profile family, the 'Keeping Up With the Kardashians' star has been subjected to false rumours and negative stories but she's developed a ''thick skin'' and gets through any turbulent periods by knowing gossip doesn't stay around forever.

Speaking to the new issue of Britain's Glamour magazine, she said: ''So many negative things come at me all the time.

''Of course, it does affect me, but you develop a thick skin.

''Nothing has lasted so long that I haven't gotten through it, so whenever a new bad story or rumour emerges, I know it will pass, too.

''Everything in life is transient.''

Kylie also spoke about how she was always ''super insecure'' about her lips but admitted she didn't understand why so many people were ''obsessed'' with her mouth.

She said: ''I really wanted the illusion of bigger lips, so I over-lined mine like crazy, and then people started getting obsessed.''

The brunette beauty's lip kit line has been hugely successful and she's hopeful that one day she can pass her empire down to her daughter.

She said: ''I work hard for Stormi and being able to pass Kylie Cosmetics onto her - if she is interested - would be such a cool thing to do.''