Liam Hemsworth could be facing a bitter courtroom clash with his estranged wife Miley Cyrus next month.

According to documents obtained by Woman’s Day, he 29-year-old Australian star is currently organising legal arrangements for the split, and has until January 21 to lodge his case paperwork.

If he fails to do so, Miley and Liam will be forced to go head-to-head in the courtroom and he will likely face a fine.

Nothing like a backup plan: Liam Hemsworth has hired the services of a Hollywood divorce attorney in the lead up to his legal separation with Miley Cyrus

However, according to a ‘friend’, Liam, who has retained high-profile Hollywood divorce lawyer Laura Wasser, isn’t worried about a potential courtroom stouch with Miley.

‘[Miley has] got just as much to lose as he does,’ they said.

Ms Wasser has been retained by A-listers such as Ryan Reynolds, Ashton Kutcher and Johnny Depp and carries a fierce reputation.

Liam and Miley announced their split back in August after she was snapped by photographers kissing blogger Kaitlynn Carter.

On the offensive: Liam has reportedly hired divorce lawyer Laura Wasser but apparently told friends he was ‘not worried’ about what might unfold during a potential legal clash with Miley Cyrus (pictured)

Ready for battle: Laura Wasser (pictured) has worked with stars such as Ryan Reynolds, Ashton Kutcher and Johnny Depp and carries a fierce reputation

But just two months later the Hunger Games star had moved on with actress Maddison Brown.

The 22-year-old has recently revealed she wanted to keep her personal life out of the public eyes after receiving death threats.

‘I’ve always had this position that personal life is personal, and I would like to keep my privacy intact for as long as I can,’ the Dynasty actress told Sunday Life magazine this weekend.

It’s over: Liam split with Miley back in August after she was snapped by photographers kissing blogger Kaitlynn Carter (right)

Liam’s new girl Maddison Brown shares her life on instagram

The star, who boats half a million Instagram followers, explained that she is wary about maintaining her privacy on social media.

‘The more people see you, especially on the screen, the more they feel they know you and are interested in your personal life,’ the strawberry-blonde said.

When quizzed on the kinds of social media messages she receives, Maddison confessed: ‘I’d say for the most part people are pretty positive, but I have received the odd death threat’.

It is unknown if the pair are still dating.

Death threats: When quizzed on the kinds of social media messages she receives, Maddison confessed: ‘I’d say for the most part people are pretty positive, but I have received the odd death threat’