That is the rumor this weekend after Cyrus, 25 flew into Byron Bay, on the New South Wales coast of Australia, to spend the New Year with her 27-year-old fiancé.
And now it is being reported they got hitched in secret during the trip.
So far, there has been no official confirmation, however, the couple were spotted wearing bands on their ring fingers in the coastal town last week.
A source revealed: "It felt right they are husband and wife after tying the knot in secret in Byron Bay."
The A-list couple called off their first engagement in 2013, but rekindled their romance in January 2016, while ringing in the New Year in Byron Bay.
And the spot clearly holds a special place for the famous pair.
This is not the first time the couple, who met on the set of 'The Last Song' in 2009, have sparked speculation they have got married.
RadarOnline.com previously reported how the pair has bought a new farmhouse in Nashville and have custom-built a nursery inside.
We pay for juicy info! Do you have a story for RadarOnline.com? Email us at email@example.com, or call us at (866) ON-RADAR (667-2327) any time, day or night.