From Taylor Swift and Selena Gomez’s sisterhood to Troye Sivan and Ariana Grande’s tight bond, how well do you know these besties? Try our quiz and find out!

1. 

Which Jessie Reyez track put her on Billie Eilish's radar?

2. 

How many tracks have The Weeknd and Lana Del Rey worked on together?

3. 

What was the name of Post Malone's 2016 collab with Justin Bieber?

4. 

Lady Gaga and Elton John collaborated on which 'Chromatica' track...?

5. 

Where did Shawn Mendes and Niall Horan first meet?

6. 

What year did Taylor Swift and Selena Gomez first become friends?

7. 

Troye Sivan appeared in Ariana Grande's music video for...?

8. 

Demi Lovato and Sam Smith collaborated on which track...?

 

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