Kunis are engaged to be married, according to an online news
The two, who have been dating for about two years, appeared together on the popular television sitcom "That '70s Show."
Photographs on the US Weekly and E! websites taken of Kunis on Thursday in Los Angeles showed her sporting a large diamond ring on her left hand.
Kutcher, 36, is divorced from actress Demi Moore. He appears in the TV sitcom "Two and a Half Men" and starred last year...