Judy Greer works.
Judy Greer ( born Judith Therese Evans ; July 20 , 1975 ) is an American actress , model and author , known for several television and film roles . On television , her best known roles include Kitty Sanchez on Arrested Development , Ingrid Nelson/Fatty Magoo on It 's Always Sunny In Philadelphia , Trixie on Californication , and Cheryl Tunt on the animated comedy series Archer . 2014 also saw the publication of her first book , I Do n't Know What You Know Me From : Confessions of a Co-Star .