Nicole Richie showed off her diamond sparkler at a taping of David Letterman , where she revealed her and boyfriend of three years Joel Madden are engaged. The couple, who have two children, celebrated the good news with a dinner at Abe and Arthurs and are expected to tie the knot this summer. Congrats, you two! Related Links: Nicole Richie Says Her Life Is Blessed
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Nicole Richie & Joel Madden Engaged!
