Taylor Swift and Lorde
Lorde (right) bares the challenges of being Taylor Swift’s friend. In this photo, the singers arrive at the Vanity Fair Oscar Party in Beverly Hills, California on Feb. 28, 2016. Reuters/Danny Moloshok

Update Tuesday, June 20 at 9:25 a.m. EDT: Lorde issued an apology after a fan called her out, saying Taylor Swift's best friend, pop singer Selena Gomez, suffers from lupus, an autoimmune diesase. “Didn't mention taylor, but regardless, i fucked up & that was really insensitive. i'm sorry,” Lorde wrote.

Original story:

What is it like to be a part of Taylor Swift’s girl squad? “Green Light” singer Lorde says it’s like having a friend with “autoimmune disease.”

“It’s like having a friend with very specific allergies,” she told The Guardian. “There are certain places you can’t go together. Certain things you can’t do. There are these different sets of considerations within the friendship. It’s like having a friend with an autoimmune disease.”

Lorde previously admitted that she is not “good” at being famous, so being friends with one of the most famous singers of today definitely has its challenges. What makes their friendship work is how much they value each other in their lives.

READ: Everything we know about Lorde’s ‘Melodrama’ album

“It’s an element of wanting to stick together,” she said of her bond with Swift. “Because it can be so scary to do this. These friendships, they’re about having a hand put on your shoulder by someone who knows. They’re about hearing, ‘I’ve done it, too.’”

Earlier, Lorde said she became a victim of body shaming after her song “Royals” became a hit. “It rocked my foundations and could have [messed me up], you know? I remember being made aware of my looks and my body in a way that I had never been,” Lorde told NME.

Lorde added that she was no stranger to criticism, but fame took things to a whole different level. “I remember all these kids online, I think I beat their favorite people to number one [on the music charts], and they were like, ‘[Expletive] her, she’s got really far-apart eyes.’ I remember being like, ‘Whoa! How did I get all this way without knowing I had far-apart eyes?’ Just weird [things] like that,” she said.

Lorde was only 16 years old at the time when the album “Pure Heroine” came out, so she didn’t know how to handle the negative attention. But now that she has released her second album, “Melodrama,” the singer said she is better equipped to handle public scrutiny, whether it be good or bad.

“Melodrama” was released on June 16.