It appears that the hard feelings between Sienna Miller and ex beau Jude Law has not faded away, for the ex-couple are reportedly criticizing each other in private, according to friends.

While Jude has apparently dissed Sienna's current flame, Jamie Burke, the 'Factory Girl' actress has reacted by attacking skank du jour Lindsay Lohan, who was recently linked with Jude.

"They are both angry and bitter. They just keep on trading vicious insults, and keep fighting back and forth," a mutual friend was quoted as telling the Sunday Mirror.

According to common friends, Jude says that Sienna is "dull, fake and boring", while the British beauty claims that Jude is "fat, egotistical and juvenile."

Hey, when you're both right, you're both right!