Rosie O\'Donnell and Dan Aykroyd are to guest star on separate episodes of the U.S. sitcom \"Happily Divorced\" next month, EW.com reported Monday. The celebrity news Web site said O\'Donnell will play a high-school friend of Fran and Judi, played by Fran Drescher and Tichina Arnold. Akyroyd will play a potential love interest for Fran. O\'Donnell and Aykroyd co-starred in the 1994 big-screen comedy \"Exit to Eden.\"