Miley Cyrus is all grown up and looking good! The former star of “Hannah Montana” will make her primetime TV debut next month as a guest star on the CBS series “Two and Half Men.”

The 19-year-old Cyrus looks megahot in a tiny bikini top and skimpy daisy dukes in the episode, which will air on October 17. The platinum blonde cutie plays a character named Missi, who becomes a love interest for Jake (Angus T. Jones).

Here’s what co-star Jon Cryer had to say about Cyrus and her part on the show: “[Missi] is just coming to L.A. to see what it’s like to live out there. She stays with us for a few days and of course throws everything into disarray. [Miley] is beautiful and remarkable. You will enjoy her on the show!”

Part of that “disarray” is making the show’s 34-year-old star Ashton Kutcher feel suddenly very old!

This role shows a whole new side of Cyrus, who is finally making the move into more adult parts. She recently had her long brown hair cropped into a punky blonde pixie ‘do, another sign Cyrus is trying to make a break from her Disney teen look.

Given how fabulous she looks in this photo, Cyrus seems to be off to a great start!