Miley Cyrus' love interest on Two and a Half Men had no idea she was joining the show.

While it was confirmed on 27 August that Miley will play Missi — described as "an old family friend of Walden Schmidt (Ashton Kutcher) who comes to visit for a week and develops a relationship with Jake Harper when he comes home from the army", — Angus T. Jones, who plays Jake, admitted he wasn't told of the latest development.

He explained to E! News: "Honestly, they don't tell me anything of what the future shows are going to be. I'm on a need to know basis. But if that's what's going to happen, it will be cool.

"I've met her a few times before and it would be fun to work with her.

"Whatever it's going to be, it's going to be interesting."

Cyrus — who made her name on Hannah Montana — is set to guest star in two upcoming episodes of the CBS sitcom.

This will be a return to the small screen for Miley, who has starred in movies LOL and So Undercover since the Disney show finished last year.