Miranda Kerr has sparked rumours of engagement with beau Orlando Bloom after being spotted wearing a gold ring on her wedding finger.

The Aussie model was photographed flashing the accessory at the Cannes Film Festival in France with Bloom as her arm candy.

The Victoria's Secret Angel, who returned to New York, had denied having any immediate plans of walking down the aisle with the Pirates of the Caribbean actor.

But the 26-year-old's rep Carlii Lyon refused to confirm or deny the new reports.

"I am aware of the images. However, I am not in a position to comment," Contactmusic quoted Lyon as saying.