Jenner and Tyga
Tyga and Kylie Jenner have been getting close for a while, but only recently made their relationship more public at Coachella in April. Getty Images

Despite it being specifically requested that she would not attend his over 18's only gig at a college in California on Saturday, Tyga went against the organiser's wishes and brought his underage girlfriend Kylie Jenner along for the show.

The 24-year-old rapper was performing at Cal State Fullerton's Spring Concert on campus with fellow hip hop artist, Ludacris.

According to TMZ, the heads at the college felt that their relationship was "questionable" and had intended that the youngest Keeping Up with the Kardashian's star be banned from the event due to her age.

The site also claimed that Tyga knew he could get away with having the 17-year-old as his guest because he knew the college wouldn't be able to replace him as a headliner if he pulled out at the last minute.

However, Jenner was seen and photographed by the university on its own Twitter page, jokingly asking when they could expect to see her application to enrol as a student at their establishment. She wore a baggy white sweat-top with tiny matching hot pants, finishing off the look with gold Nike trainers.

She was seen later wearing the same ensemble as she posted an image of herself on Instagram as she ate chicken wings and spring rolls backstage: a food order Tyga had reportedly demanded for Jenner on her arrival.

I'm always eating ugh!

A photo posted by Kylizzle (@kyliejenner) on

The couple began getting close in September 2014, despite seven years between them, after the Young Money artist split from his then-fiancée Blac Chyna the month previous.

This isn't the first time that their age gap has got in the way of the pair spending time together. In November last year, Tyga was meant to make an appearance at a nightclub in West Hollywood but never turned up when the club reportedly turned down his constant requests for Jenner to accompany him.