Jennifer Aniston is to appear in 'Cougar Town'.

The 'Switch' actress will reunite with her former 'Friends' co-star Courteney Cox Arquette when she makes a guest appearance in the first episode of the second series of the hit drama, which is scheduled to air in the US next month.

Jennifer will portray a therapist named Bonnie who Courteney's character Jules visits for treatment.

Explaining the character, 'Cougar Town' executive producer Bill Lawrence said: "She's kind of a get-too-involved-in-her-life-type of therapist.

"Those guys are so close in real life they kind of do that for each other anyway. Bonnie has the life Jules wishes she has."

According to the producer, a cameo for Jennifer had long been in the pipeline, but they wanted to wait until the show had established itself before approaching the star.

Bill explained: "It took us a while to find the show. And once we did and once it was clicking, I think that not only did Courteney feel comfortable talking to Jennifer about doing it, but comfortable in how funny she thinks the show is and that Jennifer would like it and fit into this world really well."

Although Jennifer is slated to appear for just one episode, Bill admitted the 'Bounty Hunter' star may return in the future.

He added to Entertainment Weekly: "We're very intentionally implying that it's a therapist Courteney's character has been using for a while, and we're certainly not going to make it like they'll never see each other again.

"So I'm crossing my fingers that if she has a good time it'll happen again."

This is not the first time the two actresses have appeared together since 'Friends' ended in 2004.

In 2007, Jennifer made a cameo appearance in Courteney's short-lived drama 'Dirt', when their two characters famously shared a kiss.