AnnaLynne McCord
In 2008, she was the eighteenth actress to be cast in The CW series "90210", portraying antiheroine Naomi Clark. Initially, the part of Clark was conceived as a supporting role. However, by the end of the first season, media outlets had begun referring to McCord as the series' lead. For the role of Naomi Clark, she was nominated for a Teen Choice Award and received the "Hollywood Life" Young Hollywood Superstar of Tomorrow award in 2009. In 2010, she won a Breakthrough of the Year Award in the category of "Breakthrough Standout Performance".
Anna Wolek
The role of Anna was originally cast by series creator and head writer Agnes Nixon to Broadway actress Doris Belack for the series pilot that aired July 15, 1968. Belack was an American of Eastern European Jewish descent like the Polish American character she played, and appeared in the role until 1977 and left to pursue acting roles outside of daytime television. Executive producer and Nixon protege Gordon Russell temporarily recast the role to recognized stage and theatre actress Kathleen Maguire in 1977. Former show scriptwriter Phyllis Behar recast herself to play the role in 1978, and played "Anna" until 1982.