Hugh Hefner apparently wants the pair to pose together for the January 2008 edition of Playboy.
A source told Globe magazine the pair hadn't committed to the spread "but they're seriously considering it".
Both Anderson and Richards have appeared in Playboy before. Anderson has appeared nude in the magazine a record 12 times, while Richards stripped for the December 2004 issue.
The pair became good friends while filming the movie Blonde and Blonder together.
Earlier this month, it was reported that Hugh Hefner turned down Britney Spears for the magazine as she wanted $1 million.
He made a counter offer of $400,000, which was declined.
Source: Stuff