Mary Elizabeth Ellis
Mary Elizabeth Ellis
Gender: Female
Birthday: May 11, 1979
Birthplace: Unknown
First Episode: M.E. Time
Role(s): Actor
Number of Episodes: 1
Portrays: Dr. Rossi
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Mary Elizabeth Ellis (born May 11, 1979) is an actress best known for her role as "The Waitress" on the FXX show, It's Always Sunny In Philadelphia. She portrayed Dr. Rossi in M.E. Time.

She is married to her It's Always Sunny In Philadelphia co-star Charlie Day with whom she has one son.