1st Annual PEOPLE Magazine Awards - Arrivals(01 of14)
Open Image ModalBEVERLY HILLS, CA - DECEMBER 18: (L-R) Musicians Calum Hood, Luke Hemmings, Ashton Irwin, and Michael Clifford of 5 Seconds of Summer attend The PEOPLE Magazine Awards at The Beverly Hilton Hotel on December 18, 2014 in Beverly Hills, California. (Photo by C Flanigan/Getty Images) (credit:C Flanigan via Getty Images)
Hot 99.5 Jingle Ball - Washington D.C.(02 of14)
Open Image ModalAshton Irwin of the band 5 Seconds of Summer performs in concert during the Hot 99.5 Jingle Ball at the Verizon Center on Monday, Dec. 15, 2014, in Washington D.C. (Photo by Owen Sweeney/Invision/AP) (credit:Owen Sweeney/Invision/AP)
Hot 99.5 Jingle Ball - Washington D.C.(03 of14)
Open Image ModalCalum Hood of the band 5 Seconds of Summer performs in concert during the Hot 99.5 Jingle Ball at the Verizon Center on Monday, Dec. 15, 2014, in Washington D.C. (Photo by Owen Sweeney/Invision/AP) (credit:Owen Sweeney/Invision/AP)
Hot 99.5 Jingle Ball - Washington D.C.(04 of14)
Open Image ModalLuke Hemmings of the band 5 Seconds of Summer performs in concert during the Hot 99.5 Jingle Ball at the Verizon Center on Monday, Dec. 15, 2014, in Washington D.C. (Photo by Owen Sweeney/Invision/AP) (credit:Owen Sweeney/Invision/AP)
The People Magazine Awards - Arrivals(05 of14)
Open Image ModalCalum Hood, from left, Luke Hemmings, Ashton Irwin and Michael Clifford, of 5 Seconds of Summer, arrive at The People Magazine Awards at the Beverly Hilton hotel on Thursday, Dec. 18, 2014, in Beverly Hills, Calif. (Photo by Chris Pizzello/Invision/AP) (credit:Chris Pizzello/Invision/AP)
Hot 99.5 Jingle Ball - Washington D.C.(06 of14)
Open Image ModalMichael Clifford, from left, Luke Hemmings, Ashton Irwin and Calum Hood of the band 5 Seconds of Summer pose for photographers backstage during the Hot 99.5 Jingle Ball at the Verizon Center on Monday, Dec. 15, 2014, in Washington D.C. (Photo by Owen Sweeney/Invision/AP) (credit:Owen Sweeney/Invision/AP)
Hot 99.5 Jingle Ball - Washington D.C.(07 of14)
Open Image ModalLuke Hemmings of the band 5 Seconds of Summer performs in concert during the Hot 99.5 Jingle Ball at the Verizon Center on Monday, Dec. 15, 2014, in Washington D.C. (Photo by Owen Sweeney/Invision/AP) (credit:Owen Sweeney/Invision/AP)
Hot 99.5 Jingle Ball - Washington D.C.(08 of14)
Open Image ModalLuke Hemmings of the band 5 Seconds of Summer performs in concert during the Hot 99.5 Jingle Ball at the Verizon Center on Monday, Dec. 15, 2014, in Washington D.C. (Photo by Owen Sweeney/Invision/AP) (credit:Owen Sweeney/Invision/AP)
Hot 99.5 Jingle Ball - Washington D.C.(09 of14)
Open Image ModalMichael Clifford, left, and Luke Hemmings of the band 5 Seconds of Summer perform in concert during the Hot 99.5 Jingle Ball at the Verizon Center on Monday, Dec. 15, 2014, in Washington D.C. (Photo by Owen Sweeney/Invision/AP) (credit:Owen Sweeney/Invision/AP)
Hot 99.5 Jingle Ball - Washington D.C.(10 of14)
Open Image ModalLuke Hemmings of the band 5 Seconds of Summer performs in concert during the Hot 99.5 Jingle Ball at the Verizon Center on Monday, Dec. 15, 2014, in Washington D.C. (Photo by Owen Sweeney/Invision/AP) (credit:Owen Sweeney/Invision/AP)
Hot 99.5 Jingle Ball - Washington D.C.(11 of14)
Open Image ModalAshton Irwin of the band 5 Seconds of Summer performs in concert during the Hot 99.5 Jingle Ball at the Verizon Center on Monday, Dec. 15, 2014, in Washington D.C. (Photo by Owen Sweeney/Invision/AP) (credit:Owen Sweeney/Invision/AP)
Hot 99.5 Jingle Ball - Washington D.C.(12 of14)
Open Image ModalAshton Irwin of the band 5 Seconds of Summer performs in concert during the Hot 99.5 Jingle Ball at the Verizon Center on Monday, Dec. 15, 2014, in Washington D.C. (Photo by Owen Sweeney/Invision/AP) (credit:Owen Sweeney/Invision/AP)
Hot 99.5 Jingle Ball - Washington D.C.(13 of14)
Open Image ModalAshton Irwin of the band 5 Seconds of Summer performs in concert during the Hot 99.5 Jingle Ball at the Verizon Center on Monday, Dec. 15, 2014, in Washington D.C. (Photo by Owen Sweeney/Invision/AP) (credit:Owen Sweeney/Invision/AP)
MTV Video Music Awards 2014 - Arrival(14 of14)
Open Image ModalMusicians Ashton Irwin (L-R), Calum Hood, Luke Hemmings and Michael Clifford of US band 5 Seconds of Summer arrive on the red carpet for the 31st MTV Video Music Awards at The Forum in Inglewood, California, USA, 24 August 2014. Photo: Hubert Boesl/dpa (credit:Hubert Boesl/DPA)