Mary Elizabeth Ellis

Mary Elizabeth Ellis (born May 11, 1979 in Laurel, Mississippi, height 5' 4" (1,63 m)) is an American actress and writer best known for her recurring role as "The Waitress" on the FX comedy series It's Always Sunny in Philadelphia. She also starred in the NBC sitcom Perfect Couples. Description above from the Wikipedia article Mary Elizabeth Ellis, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Cast

Licorice Pizza
Momma Anita

Fool's Paradise
Makeup Woman #1

A Quiet Little Marriage
Olive
Well Enough Alone
The Guy's Girl

The Last Time You Had Fun
Alison

Masterminds
Michelle Chambers

Red One
Olivia

1 in the Chamber
Janice

The Truth About Lies
Sharon

The Nightman Cometh: Live
The Waitress

Mother, May I Dance with Mary Jane's Fist?: A Lifetone Original Movie
Mary Jane Stevens

Origin Story
Self

Godmothered
Paula

Don't Mess with Julie Whitfield
Rachel Schneider

How It Ends
Kristia
Ditched
Lauren

Last To Leave
Blonde