Jennifer Aniston Wedding: Bridesmaids Courteney Cox, Chelsea Handler Arguing

While Jennifer Aniston and her fiance Justin Theroux work to plan all the details of their upcoming wedding, Aniston's friends are busy planning a bachelorette party for the actress.

But all is not harmonious among Aniston's pals, as new reports say bridesmaids Courtney Cox and Chelsea Handler are arguing over what type of bachelorette party they should throw for their dear friend.

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Handler reportedly wants to throw a "raucous" and wild party for Aniston, complete with male strippers, but Cox thinks that idea is "crass" and would prefer a more elegant, mature affair for the evening.

"Courteney thinks a stereotypical party is a bit crass. Jen's begged them to come together, but neither wants to budge," a source close to the friends said.

The disagreements are reportedly weighing on Aniston, who feels the pressure for her two best friends to come together and work peacefully on her party. But Cox and Handler have never exactly gotten close to one another, despite Aniston's attempts to make it happen.

"It's ridiculous. Chelsea and Courteney have never managed to bond, despite Jen's desperate attempts," the insider said. "Jen has begged them to go to dinner again - it means a lot to her that they get along. Chelsea feels she's already made the effort and Courteney just thinks she's not very mature."

While the bachelorette party organizers struggle to figure things out, Aniston and Theroux recently made a surprising decision - to invite her ex husband Brad Pitt and his fiance Angelina Jolie to their wedding ceremony.

The Huffington Post reported that the couple made the decision because they wanted to clear the air of any animosity before tying the knot. Aniston was incredibly surprised when Theroux made the suggestion, but he has met Pitt on several occasions and had no qualms about Aniston's ex being at the ceremony.

"Justin knows that Jen and Brad talk occasionally and he likes the actor [the pair have met a few times]. Obviously, this means inviting Angelina too. Jennifer was taken aback, as she really didn't think Justin would want her ex-husband there, but she loves the fact he's so OK about it," the insider said.