Simon Cowell robbed by one-night stand, Sharon Osbourne claims he was seeing three women at once

Another day, another Simon Cowell scandal, and this time Sharon Osbourne is digging the dirt.

Over the last few days we've been treated to revelations about Simon Cowell's personal life from Tom Bower's book Sweet Revenge: The Intimate Life of Simon Cowell, serialised in the Sun.

Today's nugget is that Simon Cowell was robbed by a one-night stand, who stole his laptop and wallet after the 52-year-old invited her back to his hotel on a drunken night out.

[Related article: Simon Cowell reveals Mezhgan Hussainy engagement was 'big mistake']

[Related article: Simon Cowell gives exes millions, but what did Dannii Minogue get?]

Simon Cowell's team phoned police, who traced the woman using security cameras.

What's even more salacious, however, is Simon Cowell's ex X Factor judge Sharon Osbourne's claim that the music mogul was dating three women at one time, one of whom was his fiancée, Mezhgan Hussainy.

Sharon Osbourne has spoken about Simon Cowell's personal life / WENN

Sharon Osbourne is furious about her mention in the tell-all biography, with Simon Cowell saying she "exploded" with rage over his affair with Dannii Minogue while they were all on X Factor.

She told the Mirror she doesn't care who he sleeps with: "But how dare he bring me into it now? I don't want to be dragged into his little world of debauchery, thank you very much."

The 59-year-old says she was approached by Tom Bower to contribute to the book but refused.

[Related article: Simon Cowell confesses to Dannii Minogue affair in new book]

She's happy to make claims now, though, and alleges Simon Cowell was dating his make-up artist Julia Carta and glamour model Jasmine Lennard at the same time as he was with Mezhgan Hussainy.

Sharon said: "It'll be interesting whether the book mentions he was seeing Mezhgan, Jasmine and Julia at the same time."

The scandals continue.