Rihanna and Katy Perry recently reunited at this year's Met Gala, but fun fact: Katy isn't Rihanna's only famous friend. Rihanna has been in the spotlight for over a decade now, and throughout her time in the industry, she's amassed quite the impressive group of celebrity pals. From actors and actresses to singers like her, if we had to choose one celebrity squad to hang out with, it would definitely be Rihanna's. Seriously, who wouldn't want to be friends with Adele and Leonardo DiCaprio? Keep reading for an inside look at Rihanna's star-studded clique.