5 Seconds of Summer band members share their cute baby photos

5 Seconds of Summer fans are eagerly anticipating the band's fourth album, Calm. Pictured: 5SOS bassist Calum Hood, 24, as a youngster Lead singer Luke Hemmings appeared to sport a mullet hairstyle as he beamed brightly for his childhood photo. Pictured right at the Fire Fight Australia concert on Sunday Sweet: The third baby snap was of drummer Ashton Irwin, who grinned on his childhood bed Sweating it out! Ashton went shirtless during 5SOS's performance at the Fire Fight bushfire relief concert at Sydney's ANZ stadium on Sunday Old Me, which will be released on Friday, is the band's third single from their fourth album, Calm, which comes out next month. Adorable: Finally, guitarist Michael Clifford's picture showed him as a youngster posing in a wooden crate wearing a chef's hat and a bow tie In his element: Michael opted for a punk rock look at the Fire Fight charity concert It comes after 5SOS rocked Sydney's ANZ stadium at the Fire Fight Australia bushfire relief concert on Sunday.