Justin Trudeau's son approves of his romance with Katy Perry

In a video shared to Instagram, Xavier joined influencer G Hobs to try the 'Afters Meal', a collaboration between Drake's OVO and McDonald's, and the teenager was quizzed on the "elephant in the room", pressed on whether or not he had met Katy.

He confirmed: "She's cool, she's nice.

"We talked for hours, talking about my music. She gave me advice and next steps for me and stuff."

Katy and and Justin were first romantically linked last summer, when they were spotted on a date in Montreal, Canada, shortly after the Dark Horse singer split from Orlando Bloom - the father of her five-year-old daughter Daisy - in June.

They were next photographed together in October kissing on a yacht off the coast of Santa Barbara and they went on to make their first public appearance as a couple at the Crazy Horse Paris cabaret show in the French capital as the couple celebrated the singer's 41st birthday.

And in December, Katy shared a post on Instagram which contained intimate photos and videos from a trip to Japan with Justin.

In one photo, the couple cosied up for a selfie together while a video shows the pair dining together and looking lovingly into each other's eyes.

The Firework singer captioned the post: "Tokyo times on tour and more."

Katy has been in Japan on her Lifetimes Tour and had been pictured with Justin as he met with former Japanese Prime Minister Fumio Kishida and his wife Yuko.

Fumio wrote in his caption in Japanese: "Former Canadian Prime Minister @JustinTrudeau visited Japan with his partner and joined my wife and me for lunch.

"During his time as prime minister, we met multiple times as fellow leaders, when I visited Canada, we worked together to strengthen bilateral relations, including formulating the 'Japan-Canada Action Plan', sweating it out side by side. I am delighted that we continue to maintain this friendship in this way."

Justin had expressed similar thoughts as he reposted Fumio's message.

The 54-year-old politician wrote: "Katy and I were so glad to have the chance to sit down with you and Yuko. Thank you, Fumio, for your friendship and your continued commitment to both the International rules-based order and to a better future for everyone."