Nicole Richie and Joel Madden are celebrating two years of marriage today! The couple, who first got together in 2006, tied the knot in December 2010 with a romantic ceremony at Lionel Richie's LA home. Nicole and Joel's two adorable children, Harlow and Sparrow, were on hand for the nuptials and have been a big part of the duo's years together. From courtside dates to red-carpet appearances and sweet family outings, there are so many great moments in Nicole and Joel's relationship. Click through to see them all, and happy wedding anniversary to Nicole and Joel!