Liam's brother, Luke, speaking in Melbourne on the red carpet for the Aussie premiere of the movie Oranges And Sunshine, let the cat out of the bag.
Talking about his younger brother, Luke said, 'He was going to [tour with her in Australia] but I'm not sure.'
Miley, 18, is due in Australia with her Gypsy heart tour later this month and Liam may now be joining her.
Speaking about Liam, her co-star in the movie The Last Song, Miley has said, 'I'd been in LA for three years and I don't think any guy had actually opened the door for me.
'I was like, wow, that's super impressive.
'I actually turned to the director and said, 'He's got the job'.
'He's hot and he opened the door – excellent.'