Who knew they were friends?!

Halsey and her mom Nicole Frangipane hung with Kim Kardashian at Travis Scott's LA concert last night and they documented it on Kim's Instagram story!

The 24-year-old wore her usual head wrap with a sexy red crop top, revealing her sexy abs. Meanwhile Kim was makeup-free in what appears to be a Yeezy jacket at The Forum Wednesday night. The trio were excited to see Kylie Jenner's man hit the stage on his 31-date Astroworld tour. Kylie and daughter Stormi have been on the road with daddy for the past few weeks but the family's back in LA for Scott's extended run in LA.

Meanwhile, Halsey's been defending herself against haters who trolled her online for lip-syncing her performance on Tuesday night's finale of The Voice. She Tweeted on Wednesday: "I don't get why everytime I do TV people say I'm "lipsynching" like it's 2018 are people even allowed to do that anymore? I'm not even sure these programs would allow a singer to do it if they begged to cause they'd be scared of tech difficulties compromising the show's integrity. Like I feel so dumb even having to address this lmao."

She was also trolled for her "inappropriate" dance with Jade Chynoweth, which some thought was too much for TV. Halsey respectfully (or maybe not) disagrees: "Very proud of the emotional performance I did with @JadeChynoweth on @NBCTheVoice tonight. And also very proud to have pissed off the homophobic viewers at home who missed the message. Thanks for watching."

Ha! LOVE her!