We predicted fireworks and we were right!
The two women have been fighting for years, with the latest feud resulting from Dannii's tell-all autobiography.
"Dannii is furious Simon expects her to work with Sharon after all that’s happened," according to a source, and she "sees it as a snub. She feels Simon has no respect for her. She feels she’s come to the end of her time with The X Factor."
We're not sure which side to take, but we have to admit, we're excited to see the claws come out!
[Images via WENN.]