We are still reeling from the news that pop icon Prince has died at the age of 57. As news began to go public this afternoon just before 1 p.m. eastern time, tributes immediately started to pour in on social media , with many taking to Twitter to express shock, condolences, and anecdotes. As we process the loss of Prince, below is just a sampling of tweets, including thoughts from Justin Timberlake, Chuck D, Lorde, Questlove, Icona Pop, Boy George, and others.