One name in particular is causing friction between them - supermodel Kate Moss, 36.
‘Jude and Kate go way back,' reveals a pal. ‘But to say Kate and Sienna have never seen eye to eye is an understatement.
'They fell out years ago when Sienna was dating Kate's good mate Rhys Ifans and the rift got worse when she later dumped him.
'Jude thinks Kate should be sent an invite to the wedding but Sienna's putting her foot down and has told him no way.'
Friends of Sienna, 28, and Jude, 37, say it's just another sticking point in the run-up to their nuptials.
‘They're having fun talking about when, where and how to get married but they can't agree on anything, let alone Kate,' adds our source.
‘Their arguments about her are silly really because I don't think she'd want to go anyway.
'But Jude's point is valid. He has a friendship with Kate which is important to him and Sienna's going to have to get used to it at some point
what do you guys think? is sienna right in not wanting her there or should she suck it up let jude invite her?