Heather Mills is back in court -- this time not with ex-husband Paul McCartney, but with her ex-nanny.

Annie Trumble, 25, is suing Mills for sex discrimination after allegedly being unfairly fired when she became pregnant.

Trumble's lawyer asked that information heard during Mills' divorce trial be used as evidence that she lied under oath, and therefore is not credible. According to BBC News, Mills let out a long "no" as the request was being made.