Justin Bieber is reportedly dating Hailey Baldwin.

The 'Boyfriend' hitmaker is said to be growing close to Hailey in the wake of his split from on again-off again girlfriend Selena Gomez and believes the 18-year-old model is ''different'' to any other girl's he's dated before.

A source told HollywoodLife.com: ''Justin has a new muse and it's Hailey.

''She's different from the other girls Justin has been with. She's really fun, feisty, and could care less about Justin's fame and fortune.''

The 20-year-old singer even treated Hailey to an extravagant shopping trip to celebrate her recent birthday and is described as being on ''the rebound'' from brunette beauty Selena.

The source added: ''Hailey's birthday was on November 22 so when she got to New York, Justin made sure to spoil her and treat her like a princess. He totally took care of her and took her shopping. He's definitely on the rebound from Selena.''

Despite Justin's advances, Hailey - who is the daughter of Hollywood actor Alec Baldwin - is said to be being ''cautious'' about her blossoming romance with the star.

An insider said: ''Justin usually gets what he wants and he's trying to seal the deal with Hailey. But she's being a bit cautious. Hailey doesn't want to just be another girl on Justin's list. Right now, she's treating this relationship as a friendship.''