Lizzie McGuire star Hilary Duff dated musician Joel Madden for two years until 2006, before going on to wed singer-songwriter Matthew Koma

Hilary Duff and her husband, Matthew Koma, stole the Halloween spotlight this year! Koma dressed up as the actress' ex-boyfriend Joel Madden, while Duff played the part of his twin brother, Benji Madden,

Hilary Duff and Matthew Koma got in on the Halloween fun by dressing up as her ex Joel Madden and his twin brother, Benji Madden. "Going as @benjaminadden and @joelmadden to a Halloween dinner with @joelmadden and @nicolerichie,

Hilary Duff and husband Matthew Koma pull off Madden brothers costumes in dinner date with Nicole Richie and Joel Madden

Hilary Duff and husband Matthew Koma dressed up as her ex Joel Madden and his brother Benji Madden for a Halloween dinner with Joel and wife Nicole Richie.

Matthew Koma revealed that he and wife Hilary Duff dressed up as the Madden brothers for Halloween. On his Instagram story, Matthew shared a picture of him dressed as Good Charlotte singer and Inkmaster host Joel Madden.

On his Instagram story, Matthew shared a picture of him dressed as Good Charlotte singer and Inkmaster host Joel Madden. And then a picture of Hilary as Benjamin. The occasion? Dinner with Joel and his wife Nicole Richie!