Imagine you’re a budding superstar who just dropped your stellar debut album after years of hard work and tons of buzz. What do you do next?

Well, first you stop by the MTV offices and dazzle our faces off with a special intimate performance. And THEN, you throw an effin’ epic party and invite all your most famous and fabulous friends and celebrate the night away because YOU DID IT!

At least, that’s the approach Tori Kelly took to celebrate Unbreakable Smile, which dropped Tuesday (June 23). At a celebratory affair at Hollywood hotspot The Nice Guy Thursday night, Kelly joined her pal Meghan Trainor for a joint performance of “All About That Bass.”

Think both of these girls’ monstrous vocals are too epic to possibly coexist with each other? Let them prove you wrong…

Trainor later let her inner fangirl fly when she reflected about the special moment on Instagram, writing, “@torikelly my dreams came true tonight. I’ve always wanted to see you live and maybe sing with you one day and it finally happened at @theniceguyla ..I was so nervous I was shaking lol I love you so much, you deserve everything and more. congrats girl”

Justin Bieber also showed up to lend his support, later congratulating Kelly with a sweet tweet shouting out his buds The Weeknd, Ed Sheeran, and Cody Simpson, all of whom also attended the shindig.

And in case you’re not feelin’ the FOMO yet... according to JustJared, other celebs in attendance included Selena Gomez, Ashley Benson, Debby Ryan, Rixton, The 1975’s Matt Healy, and Fifth Harmony’s Camila Cabello and Ally Brooke.

Yeahhhh, we’re pretty sure our smiles would be unbreakable too with a #squad like that.