When asked for comment Tuesday, Parker's spokeswoman, Tamar Salup, referred The Associated Press to the Web site.
Parker, 43, has a 3-year-old son, Will, with ex-boyfriend Billy Crudup.
The actress stars on Showtime's offbeat comedy "Weeds" as a newly widowed mother of two who starts selling marijuana to maintain her family's comfortable suburban lifestyle.
Parker co-stars with Brad Pitt and Casey Affleck in "The Assassination of Jesse James by the Coward Robert Ford," which opens in theaters Friday.
She won an Emmy Award for "Angels in America." She has won two Golden Globe Awards, one for "Angels in America," the other for "Weeds," and had a recurring role on NBC's "The West Wing."
Her screen credits also include "Fried Green Tomatoes," "Boys on the Side" and "The Client."