Matthew Koma hilariously dressed up as wife Hilary Duff's ex Joel Madden for a Halloween double date with Joel and his wife Nicole Richie.
Musician Matthew and former Disney star Hilary wore matching MDDN hats - the name of Good Charlotte rockers Joel and Benji Madden's music company - and shades as the 'Lizzie McGuire' star went as his twin Benji.