Kim Kardashian says her nephew is “the best birth control ever”.

The reality TV star loves being an aunt to seven-month-old nephew Mason - her sister Kourtney’s son - but admits it’s put her off having children because she’s seen how hard it is to be a parent.

When asked if she would like children by Ryan Seacrest on his KIIS FM radio show, Kim replied: “Let’s just say that Mason is the best birth control ever! I am definitely happy to wait a few years.”

Earlier this year, Kim split from her NFL footballer boyfriend Reggie Bush and while she has been linked to Dallas Cowboys wide receiver Miles Austin, she insists she is currently single.

Kim said: “I’m single and having a good time. I am living my life and there’s nothing I want to tell you.

“I’m meeting some really amazing people and just trying to live my life, and I am definitely a lot more private than I was before.”

Speaking shortly after she split from Reggie, Kim - who was also romantically linked with soccer star Cristiano Ronaldo - admitted she is looking for a husband.

She said: ‘I’m on the market. This is a new life for me. I haven’t been single in years. I never thought I would like being single. I’m not the dating type. I’m a relationship kind of girl. The next one that comes into my life will be my husband.’ ”