Taylor Swift (@taylorswift on Instagram)

Lorde celebrated her 20th birthday with the help of her friend Taylor Swift in New York on Monday, and the whole crew was there. Even Aziz Ansari showed up.

Pals Tavi Gevinson, Mae Whitman and Rachel Antonoff were in attendance, but Ansari's appearance was a little random, given that he's a hardcore fan/friend of Kanye West, Swift's frequent nemesis.

Swift threw the party at ZZ's Clam Bar with couple Jack Antonoff and Lena Dunham and Lorde's childhood friends Katie Braatvedt, Maddy Budd and Eleanor Day. Lorde's sister Jerry even made the trek from New Zealand. Check the evidence below: