Celebrities Who Guest-Starred on Their Partner's TV Show

Charlie Day in London for 'Horrible Bosses' - The Boston Globe

Charlie Day's Relationship With Mary Elizabeth Ellis Is As Strange As Something From Its Always Sunny In Philadelphia

Horrible Bosses' star Charlie Day and wife Mary Elizabeth Ellis expecting first child – New York Daily News

Charlie Day & Mary Elizabeth Ellis Welcome Son

LOS ANGELES, CALIFORNIA, USA - FEBRUARY 08: Actor Charlie Day and wife/actress Mary Elizabeth Ellis arrive at the Los Angeles Premiere Of Prime's 'I Want You Back' held at ROW DTLA

Los Angeles Ca February 13 2017 Stock Photo 612485024

Mary elizabeth ellis hi-res stock photography and images - Page 3 - Alamy

Charlie Day & Mary Elizabeth Ellis Editorial Photography - Image of husband, popular: 175777377

It's Always Sunny It's always sunny in philadelphia, Charlie and the waitress, It's always sunny

272 Charlie Day And Wife Stock Photos, High-Res Pictures, and Images - Getty Images