While many normal ex-couples fight over houses, sentimental furniture, pets or child custody arrangements, Jennifer and Justin are reportedly bogged down in a bitter feud over haircare and skin products.
'Justin has left over $50,000 of beauty products at Jen's Bel Air mansion,' a source is quoted as saying by Life & Style. 'And he's on a mission to get them back!
'Justin has asked Jen to mail all of his beauty products to NYC.'
The US publication claims that the estranged couple have a long history of squabbling over the mirror, and this final battle is strangely appropriate.
'When they were together,' a source told the title, 'Jen would often complain that Justin had more mirror time than her.'
Indeed, Jennifer has been quoted in the past on the matter, griping that she had trouble keeping her expensive potions to herself.
'He steels my shampoo, my hair paste... whatever product I put on my face,' she said.
But if she once found the matter amusing, it seems that's no-longer the case, according to Life & Style.
'Jen is furious that her ex seems to care more about his hair and skin care regimen than their marriage falling apart,' the title's source says. 'Demanding his beauty products back is a bit too much for Jen to handle right now. She's incredibly hurt.'
Jennifer Aniston and Justin Theroux have not yet responded to Life & Style's report.