Lauren Alice Koslow (born March 9, 1953) is an American actress, best known for her long-running portrayal of Kate Roberts on the soap opera Days of Our Lives, which she has played continuously since 1996. She previously appeared in the soaps The Bold and the Beautiful and The Young and the Restless.
Lauren was lured back to daytime in 1996 in order to replace actress Deborah Adair who left the soap opera Days of Our Lives to, ironically, spend more time with her family.
In the role of vindictive call girl turned corporate executive Kate Roberts, Koslow flourished on Days of Our Lives quickly becoming a woman fans 'love to hate'. The character is known for her wickedness and deception, specifically her ongoing war with fellow Salem resident Sami Brady (Alison Sweeney), the former ex-fiance of Kate's son Austin (Austin Peck) and ex-fiance/current ex-wife of her son Lucas (Bryan Dattilo), and numerous affairs and romantic entanglements. Other notable character conflicts include Kate's mysterious past with series villain Stefano DiMera (Joseph Mascolo), her rocky marriage with mogul Victor Kiriakis (John Aniston), and her rivalries with crazed socialite Vivian Alamain (Louise Sorel) and Nicole Walker DiMera. Kate is the mother of Lucas Horton, Rex Brady, Cassie Brady, Philip Kiriakis, Billie Reed, and Austin Reed.
Presently, she remains a cast member of Days of Our Lives.