Juan Rico / Fame Pictures 1 / 4
Juan Rico / Fame Pictures 1 / 4

It looks like the Star Jones-Lisa Rinna feud is getting ugly. The "Celebrity Apprentice" teammates attempted to work together in the name of charity, but after Rinna was booted from the show early on, things got ugly.

On this week's episode of the hit Donald Trump show, Rinna was appointed team leader on a children's book project, but ended up hearing the dreaded words "You're fired." Rinna blamed Jones on the show for trying to take full credit for writing the book, and the now the friction has apparently grown dramatically behind the scenes: Rinna began sending nasty tweets about Jones, including posting pics comparing the former "View" co-host to some scary Halloween masks (which she's since deleted), and she reportedly sent some nasty e-mails to Jones.

According to E!, Jones is "taking this very seriously" and has lawyered up. She has been collecting the evidence and has presented it to NBC's legal department, which has warned Rinna to stop. A rep for Jones tells E!, "Star declined to make the cause of concern public as to not take away from her purpose of doing the show, which is charity."

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