With five high maintenance daughters, it’s unsurprisingly that Kardashian matriarch Kris Jenner does a lot of worrying. This time, it’s her youngest, Kylie, who is making her concerned with the 18-year-old planning a nightclub appearance in Canada – a country where she is legal to drink.

Kylie JennerKylie Jenner is causing her mother Kris Jenner to worry

In a trailer for an upcoming Keeping Up With The Kardashians episode, momager Kris can be seen bugging Kylie about travelling to Canada.

Kylie explains that now she’s 18 she "grown up" and "can handle this on my own" but Kris isn’t so sure.

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She can be seen speaking to Kylie and saying: "I just want you to be on your best behaviour. Watch your Ps and Qs.

"I’m just being your mom and saying be on your best behaviour, missy."

The teenager tries to placate her mother by explaining that she won’t be drinking but viewers are left to wonder whether the cheeky youngster will keep her promise.

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Kylie’s behaviour is the latest in a line of worrying outbursts that is reportedly causing the Kardashian family concern.

It has been recently reported that the teen’s ego is growing out of control.

A source close to the family said: "Kylie is acting like the world revolves around her and that her sisters are lucky that she is a part of their lives.

"[She] knows that the world is focusing on her right now and she told all of her sisters that she is going to be the one carrying the show."