Regina King has joined Reese Witherspoon in MGM's "Legally Blonde 2: Red, White & Blonde" for director Charles Herman-Wurmfeld. Production is set to begin this month. The Kate Kondell-penned project sees Witherspoon's character, Elle Woods, head to Washington to battle politicos after her triumphant -- and surprising -- success as a sorority girl-turned-Harvard Law School graduate. King is set to star as Grace Stoteraux, the chief of staff for Congresswoman Rudd, a part that has yet to be cast. Marc Platt is producing through his Universal Pictures-based Marc Platt Prods. along with Witherspoon, who is producing through her Universal-based Type A Films. Elizabeth Ingold is overseeing for MGM. King is lensing a lead role opposite Eddie Murphy in Revolution Studios' "Daddy Day Care" for director Steve Carr. Her credits include "Jerry Maguire," "Enemy of the State," "Down to Earth" and "How Stella Got Her Groove Back." The actress is repped by the Gersh Agency and manager John Carrabino at Catch 23 Management.