Just like Britney Spears, embroiled ex-publisher Judith Regan is having lawyer trubs. She's being sued by Dreier LLP and Redniss & Associates, who represented Regan in her $100 million lawsuit against former employer News Corp. before she fired them in December, hired Bertram Fields, and scored a settlement deal in January. Regan was supposed to pay them 25 percent of any proceeds she received, but after settling with Murdoch & Co. for a reported $25 million, they've only received $125,000. So: They're suing for their share, plus $42,560 in unpaid fees.