Justin Bieber is back in town.

The singer could have been mistaken for any number of the shirtless men performing chin-ups on Bondi's waterfront on Tuesday morning, however hawk-eyed fans spotted his trademark tattoos as he strolled along the sunny promenade, smiling and shirtless.

The 23-year-old What Do You Mean star is reportedly back in Australia to attend the annual Hillsong Conference - a religious Coachella - out at Homebush in Sydney's inner west.

The theme of the event, which also takes place in London and the United States later this year, is "Closer".