Apparently, it was North's very first concert, according to Kim's close friend Jonathan Cheban.
So, shout-out to North West for the coolest first concert ever: Kanye West at the mere age of 3. (Which makes sense, considering Kanye is her dad, but still. My first concert was Aaron Carter at the county fair, so.)
Kim K dressed herself and her daughter in identical silver sequin dresses and, of course, the whole thing was documented on Snapchat.
And don't worry, Kim's not sadistic: North was wearing protective headphones to protect her baby ears from the blaring bass through the entire show.
Tons of celebs were in the audience at the Garden that night (so THAT'S why I couldn't get tickets).
Kim got seflies with a lot of them, including supermodel Naomi Campbell, Vogue Paris editor Carine Roitfeld and "Sex and the City" star Sarah Jessica Parker.
Kim had nothing but praise for SJP, and said to her,
You're like my idol. You're the most amazing person on the planet.
It sounds it was a late night of selfie-taking for Kim because, according to Jonathan's Snapchat, they didn't leave Madison Square Garden until 1 am.
Hopefully someone took North home before her mom started dancing...