Mila Kunis. Picture: Reuters

Actress Mila Kunis and Ashton Kutcher will make their small screen reunion later this year.

The celebrity couple, who reportedly got engaged last month, first appeared together on That '70s Show.

CBS executives announced on Tuesday that Kunis will guest star in an upcoming episode of Two and a Half Men.

According to The Wrap, the actress will play a "free-spirited world traveller" named Vivian, who wins over Ashton's character Walden just before his proposal to another woman.

Kutcher and Kunis previously played boyfriend and girlfriend - Michael Kelso and Jackie Burkhart - on That '70s Show, which ran for eight seasons on Fox from 1998 to 2006.

The two stars sparked engagement rumours last week after Kunis was snapped wearing a diamond ring on her wedding finger.

Sources told Us Weekly at the time Ashton had proposed.

"She is crazy about him!" the insider said of the 30-year-old actress.

The West Australian

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