Miley Cyrus and Liam Hemsworth are tying the knot. The couple, who met on the movie set of "The Last Song," announced their engagement yesterday morning. Cyrus told People magazine that she is happy to be engaged and looks "forward to a life of happiness with Liam." The 22-year-old Australian actor and Cyrus, who is 19, have been dating since 2009. People also got the scoop on the couple's upcoming work projects. Cyrus is recording a new album while her new fiance is scheduled to shoot two movies before starting work on "The Hunger Games" sequel. There's been no word yet from Cyrus's father Billy Ray on his daughter's engagement.