Cougar Town Cat Fight
Manager Jill Littman filed the lawsuit in L.A. County Superior Court -- claiming Christa violated an oral agreement to pay her 10% of all "Cougar Town" earnings ... after she helped Christa land the gig ... a sum totaling at least $198,187.
Jill claims Christa paid her for Season One -- but then the checks stopped coming.
Relevant side note -- Christa's married to "Cougar Town" creator Bill Lawrence ... and call it a hunch, but she probably didn't need Jill's help getting the acting job. more on this story
TMZ submitted this story.