|Mary Elizabeth Ellis|
|Character||Debbie Miller (Unaired Pilot)|
|Date of Birth||May 11, 1979|
Mary Elizabeth Ellis (born May 11, 1979) is an American actress. She is best known for her role as The Waitress on the FX comedy series It's Always Sunny in Philadelphia. She also starred in the NBC sitcom Perfect Couples.
She played Debbie in the Unaired Pilot of The Millers.