Celebrity Central / Top 25 Celebs
Credit: Rui M. Leal/PRPhotos
Published: Tuesday June 03, 2014 06:00 AM EDT
More from PEOPLE
See More News
1 of 576
Justin Timberlake strums a tune at the Rock in Rio Lisboa music festival in Lisbon, Portugal, on Sunday. "Thank you all for coming out and singing your asses off! Amazing festival run," he Tweeted after the show.
Copyright © 2014 Time Inc. All rights reserved. Reproduction in whole or in part without permission is prohibited.