Liam Hemsworth has joined Twitter.

The 'Hunger Game' actor has set up his own verified account on the micro-blogging site but has only posted one tweet so far.

He wrote: ''Kicking it off on Twitter for the first time. Glad to be on board. Thank you for following.''

While Liam quickly racked up over 20,000 followers on his first day, he is only following five accounts, none of which belong to his on/off fiancee, prolific tweeter Miley Cyrus.

Meanwhile, troubled actress Amanda Bynes shared her admiration for the hunky 23-year-old actor, writing on Twitter that she thinks he is ''gorgeous''.

She wrote: ''Liam Helmsworth is the most gorgeous man on the face of the earth other than Tanz Watson. Fyi! (sic)''

Liam and Amanda reportedly hooked up in 2009 when the 'Last Song' actor and Miley were on a break.

It has been claimed Liam and Miley's relationship started to crack after they got engaged in June 2012 because Miley, who chopped off her hair and dyed it peroxide blonde in August, has completely changed.

The source said: ''Liam always admired Miley's independence. But this was more like rebellion, and it freaked him out.

''She has undergone a complete personality change. She's basically thugged out.''

The friend says Miley's attitude ''was grating on him'' before their split, adding: ''He used to be obsessed with the way she would go wild. But it got more childish to him. He's growing up - and fast.''