Miley Cyrus & Liam Hemsworth engaged again?

Trust Miley Cyrus to raise our eyebrows - but not for the reason one would expect.

The 23-year-old US pop star posted four photos on Instagram on Monday wearing the engagement ring that ex-fiance, Australian actor Liam Hemsworth, 26, gave her in 2012.

The photos add fuel to the rumours that the former couple have rekindled their romance.

They were spotted getting cosy over the New Year holidays in Australia, the first time they have been seen together since they called off their engagement in 2013.