Lady Gaga is such a Babymetal fan, the pop star brought the trio as openers for a leg of her ArtRave tour, exposing the group to an important American audience.

Who would have thought we'd see the day when Sum 41 and Babymetal take a photo together? 2016 rules.

Babymetal and Slipknot? Only at Britain's Download Festival.

A good friend will take a selfie with you. A true friend will pose with your merch. That's what Anthrax is for Babymetal.

Ariana Grande is one of Yuimetal's favorite artists, and she got to meet her idol at Japan's 2015 Summer Sonic Festival that brings together major domestic and international acts. We think Ariana fits right in here.

Meeting metal gods Judas Priest was probably a huge and important moment for the rising metal act.

Aww! Jeremy dyed his hair to match the girls' scrunchies!

Even the Prince of Darkness will take some time to pose with these talents.

Babymetal also hangs out with your favorite pop-punk bands.

Not only does All Time Low hang out with the J-pop/metal darlings, but the band also wears their merch on stage. That's what we call true friendship.

Babymetal joined up with the dubstep prince at Ultra Japan, calling it a "borderless collaboration" on their Instagram. Can you imagine what a track with these two would sound like?!

Who says J-pop artists don't support one another? Babymetal met up with another one of Japan's international successes: J-pop/techno trio Perfume!

Here's our girls hanging out with metalcore hottie Vic Fuentes of Pierce the Veil at Reading Festival.

Herman Li and Sam Totman of the British power-metal band feature on "Road of Resistance," a bonus track added to the international editions of their debut album Babymetal. 

One of their most unexpected fans: classic rock legend Brian May!

Take a look through Babymetal's Instagram account and you'll see they've hung out with the British rock act several times in several countries.

Representing the ladies of hardcore, Babymetal met Butcher Babies at 2015 Metal Hammer 'Golden Gods Awards.'

Even the KISS legend has a case of Babymetal fever.

Babymetal met up with the Limp Bizkit frontman in Germany because the world is awesome.

One of Babymetal's earliest fans was Dave Mustaine of Megadeth. Take a look at Babymetal's Instagram and he's the first celeb they took a pic with!

The ladies met the rock veterans at the APMAs 2016.