This weekend's most dramatic celebrity hair change goes to Justin Bieber, who decided to dye his hair pastel pink. The singer was photographed out in Los Angeles with the new shade on Sunday. 

To top it off, Bieber matched his fuchsia Drew House sweatpants to his new bubblegum pink hair, as one does. But it's unclear whether or not his hair color was inspired by the pants, or he just wore the pants because he was inspired by his new hair color. Either way, Bieber's pastel hair is one of the most dramatic hair changes he's made since he gave himself a buzz cut last fall.