Sarah Rafferty (born December 6, 1972) is an American actress, best known for her role as Donna Paulsen on the USA Network legal drama ''Suits'' and for her role as Katherine Walter on the American teen drama ''My Life with the Walter Boys'', for which she received a Children's and Family Emmy Award nomination in the Outstanding Supporting Performer category. She currently co-hosts a podcast with her fellow ''Suits'' co-star Patrick J. Adams called ''Sidebar'', with them watching through an episode of the legal drama with each podcast.
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