Just LOOK who turned up to North West’s ‘family only’ birthday bash

It is not know exactly when Kylie Jenner, 17 and her 26-year-old boyfriend Tyga first started seeing each other.

However, it is believed that they have been together since he split from his former fiance and the mother of his child, Blac Chyna, last summer. Certainly, by her 17th birthday celebrations in August, the pair appeared particularly close.

However, given her age and in the aftermath of the breakdown of his relationship with his partner of three years, understandably it wasn't until March that the duo saw fit to publicly acknowledge their love.

And now, the musician seems to have bagged the ultimate seal-of-approval: namely an invite to North West's 'family only' birthday party, which took place in Disneyland yesterday.

Kylie is believed to have grown close to Tyga and Blac Chyna's son, King Cairo, who turns three in October – and it is a bond which has helped him to secure his place in her family's affections.

Still, the Jenner-Kardashian clan have previously been cautious of the reality TV star's involvement with the rapper, whose real name is Michael Ray Stevenson. 

As recently as last month, a close friend in conversation with People.com, revealed that momager Kris in particular was worried that the relationship was bad for her youngest child's image.

"A lot of Tyga's friends are enablers," the source explained. "That makes her mom the most nervous. She doesn't want Kylie getting off track.

"Her parents know she is going to date who she wants, but they are worried he will have a negative impact on her decision-making."

Around the same time, the teenager posted a bizarre Snapchat video in which she appeared to declare herself "high as f***".

Also in attendance at North's soiree were, of course, her parents Kim Kardashian and Kanye West, as well as her aunts Kourtney Kardashian and Kendall Jenner, and her cousins Mason, five, and Penelope, two.