Nicole Richie revealed on the Late Show With David Letterman that she and longtime love, Joel Madden, are engaged. The couple share two children — 3-year-old daughter Harlow and 5-month-old son Sparrow.
Upon hearing the news, David joked: "Oh, congratulations, that's nice. A lot of people will have children and then they don't want to rush right into the marriage — you know, they wait 'til the kids get out of college, then they get married."
The episode, which taped last night, will air on Friday.