Justin Bieber and Hailey Baldwin have attended a spiritual conference together

The 'Boyfriend' hitmaker, 21, and the brunette beauty - who is the daughter of actor Stephen Baldwin - looked relaxed and happy as they were photographed leaving the arena together fuelling speculation they are an item.

The pair arrived separately in the Australian city with Justin taking a private jet and Hailey opting to travel on a commercial flight.

A spokesperson for the Hillsong conference confirmed the star is not performing at the event and was simply there to enjoy the seminars.

They said: "People come from across the world to Sydney each year to attend Hillsong Conference. Justin is here - like tens of thousands of others - as a delegate who is seeking to build stronger foundations into his life."

They added of 18-year-old Hailey's presence at the conference: "I'm not aware of that name... Anyone is welcome to come. The conference is open to everyone.

"We don't make a big deal [out of celebrities],

"The purpose of the conference is to honour God, and our hope for all attending is that their lives are enriched."

Justin insisted he had turned over a new leaf earlier this year following his arrest for drag-racing and assault in January 2014 and credited his "relationship with God" for helping him to stay positive.

He recently wrote on his Instagram account: "I'm not religious nor do i think I have ANYTHING figured out that's why I call out on God to help me through what I can't do on my own. Developing my relationship with God has been the coolest thing I've experienced, to know that I'm not alone and I don't have to live in fear. (sic)"