Leona Lewis -- a very strict vegetarian -- is upsetting her tour crew by forcing them to follow her green-only diet.
The X-factor starlett has allegedly stopped her all staff from eating any meat products around her.
According to The Sun newspaper, a source said: "There are going to be murders. Leona has demanded that only veggie food be made available for everyone - and members of the crew are threatening to quit. She will not even allow food to be bought off-site then brought in."
We wonder how Australia's own little diva Gabriella Cilmi, who is supporting Lewis on her current tour, is coping with Lewis' vego ways.