Sienna Miller and Kate Moss, both known for their demure behavior at public functions got into a screaming match at a freaking wedding, before reformed scenester Sadie Frost stepped in and told them to have a little respect for the bride and groom, and maybe act like, oh say, 12 year olds.

According to the UK Sun, the two charming beauties were fighting over the attention of Rhys Ifans…this guy. Yeah, that guy. Um…ok. Apparently Moss was cranky that Rhys stopped being exclusively seen in posh London clubs inebriated with her and instead has been spending lots of drunken, slobbery nights at posh London clubs with Miller.

Evil glares were exchanged across the dancefloor as the tension mounted between the two camps.

And after some serious alcohol lubrication it all kicked off.

A witness at Saturday’s bash told me: “Kate had a go at Sienna and accused her of stealing her style. She was ranting on about how Sienna was now trying to steal her lifestyle and her friends too.

“It was really cutting and everyone was listening to them.

“A few drinks had been sunk by the time Kate said it and Sienna had plucked up some Dutch courage too. She gave Kate as good as she got.”

After Sienna fought her corner with an obscene tirade of her own, an unlikely peacemaker stepped in — Sadie.

Let’s not forget Sadie once despised Sienna for getting together with her ex JUDE LAW.

Right. Nice to see some celebrities behaving badly. For a full, detailed rundown go here.

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