He celebrated his 26th birthday on Sunday.And on Tuesday, Justin Bieber was back hard at work rehearsing for his upcoming Changes tour.The Canadian hitmaker is preparing to go back out on the road for the first time since cutting short his Purpose Tour in 2017 and posted a shirtless photo of himself to Instagram Tuesday with the caption: 'Tour prep.' Getting ready: Justin Bieber posted a shirtless photo of himself to Instagram on Tuesday with the caption: 'Tour prep', as he rehearses for his Changes Tour set to start in Seattle on May 14The photo showed off the singer's multiple tattoos on his torso and arms.He wore a backwards baseball cap as he held a microphone in one hand and sang with his other arm stretched out in front of him.
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