Aniston to guest star with Cox
Jennifer Aniston will pay a visit to old Friend Courteney Cox in Cougar Town.
Jen will portray a therapist who is being seen by Courteney's character in the first episode of the new series, to be broadcast in the US next month.
ABC said Jen would only be in one episode.
The two actresses starred for many years on Friends.
Courteney is in her second season of Cougar Town, where she plays a character hungry for younger men.
Jen is promoting her new movie, "The Switch."