Ryan Eggold, Jessica Walter move to 'Beverly Hills, 90210'

The CW continues to fill up its most popular zipcode.

Ryan Eggold and Jessica Walter have signed on to co-star in The CW's " Beverly Hills, 90210" spinoff, according to The Hollywood Reporter.

Eggold, last seen on FX's "Dirt," will portray the rebellious yet cool and attractive English lit teacher at West Beverly High whose unusual teaching style irks the faculty while bringing his students closer, sometimes too close.

Walter will play Tabitha Mills, a has-been Hollywood starlet who finds comfort in a bottle and whose alcoholism is the reason her son's family moved to Beverly Hills from Kansas. Tabitha is the grandmother of WBHS student Annie (Shenae Grimes) and mother-in-law to Celia ( Lori Loughlin), a former Olympic Games medalist.

These women join the previously cast AnnaLynne McCord and Dustin Milligan.

Walter earned an Emmy nomination for playing the grandmother on FOX's "Arrested Development."