Jennifer AnistonJennifer AnistonJennifer Aniston is to reunite with best pal Courteney Cox on the small screen...

But this time they're anything but friends.

Jennifer will be joining Courteney on the season finale of the US TV show Dirt.

She will play bitchy tabloid editor Tina Harrod, the arch nemesis to Courteney's Lucy Spiller - the ruthless editor-in-chief of the gossip mag DirtNow.

Courteney told People magazine: "We're shooting this Thursday, I can't wait...

"We'll have a ball. We're just going to have fun."

This will be the first time the two have appeared on a TV show since Friends went off the air in 2004.

Courteney, who is also a producer of Dirt, revealed Jen is ecstatic:

Best Pals: Courteney Cox and Jennifer AnistonJen With Courteney"Jennifer loves the show. She's already like, 'What am I going to do?'"

But one thing's for sure... the two real-life BFFs won't be having a Friends reunion anytime soon.

Said Courteney: "It's too hard to get everyone together."