Singer Justin Bieber and model Hailey Baldwin have added fuel to dating rumours as they were spotted kissing during their vacation.

The "What do you mean?" crooner took to Instagram on Sunday to share a photograph of them cosying up, reports aceshowbiz.com.

In the image, Bieber is seen wearing a white T-shirt topped with an unbuttoned blue shirt. He appears to be dancing with a girl whose face isn't apparent.

The singer put his arm around her mid-section and planted a kiss on her lips. While the girl, who wore a white crop top and mini skirt, didn't show her face to the camera, fans know that she's Baldwin as Bieber tagged her on the photograph.

The photograph had garnered 904,000 likes in less than two hours after it was shared.

Fans had mixed feelings to the image. A fan who preferred the "Baby" crooner and singer Selena Gomez as a couple wrote: "Still liked Selena better."

Another fan who also disapproved of Bieber's supposed romance with the model commented: "Don't like her."