Photos: These shirtless stars are ready for summer!!

Nick Jonas

Source: Instagram user nickjonas

Chris Pratt

Source: Instagram user prattprattpratt

Scott Eastwood

Source: Instagram user Scott Eastwood

Ryan Guzman

Source: Instagram user ryanaticz

Justin Bieber

Source: Instagram user justinbieber

Ansel Elgort

Source: Instagram user anselelgort

Tom Daley

Source: Instagram user tomdaley1994

Zac Efron

Source: Instagram user zacefron

Keegan Allen

Source: Instagram user keeoone

Kellan Lutz

Source: Instagram user kellanlutz

Usher

Source: Instagram user howuseeit

Zachary Quinto

Source: Instagram user zacharyquinto

Harry Shum, Jr.

Source: Instagram user harryshumjr

Colton Haynes

Source: WhoSay user coltonhaynes

Dwayne Johnson

Source: Instagram user therock

Shia LaBeouf

Source: Instagram user kidchocolate

Donnie Wahlberg

Source: Twitter user DonnieWahlberg

Cody Simpson

Source: Facebook user codysimpsonmusic

Joe Manganiello

Source: Instagram user joemanganiello

Ricky Martin

Source: Instagram user rickymartin

Austin Mahone

Source: Instagram user austinmahone