Both of Kevin Federline's exes are turning to legal advice to improve their reputation.

While Britney Spears is looked into action about billboards erected in Florida that make her look crazier than she does herself, K-Fed's first love, Shar Jackson, is reportedly planning to sue Star magazine.

The small-time actress, who has risen to fame thanks to her connection with Brit and Kev, is suing the tabloid after it reported she is pregnant again.

The magazine claimed that Shar, a single mother-of-four, is expecting another child - her fifth in total and her third with Kevin. However, the star is adamantly sure that she is not pregnant to failed rapper K-Fed again.

TMZ quotes Shar saying, "When my kids hear things at school and then ask me if they are getting a new brother or sister, I have to put my foot down."

The former "Moesha" star has allegedly even gone as far as to offer a pregnancy test to the publication to prove beyond reasonable doubt that she is not with child.

Shar reportedly said to Star's editor-in-chief Bonnie Fuller, "I stand by my truth by offering you an EPT test if you stand by yours and reveal your 'source' to me."

As far as the mother-of-four is concerned, the public is jealous that the former couple have been mature enough to put their break-up aside and be mature friends for the sake of their babies.

She said, "Honestly, some people are just really unhappy that me and Kevin have a great friendship. Obviously some people can't handle that. Some people like to start stuff to make their little lives better."

Kevin left Shar abruptly when he met Britney. Shar was pregnant at the time with the couple's second child. K-Fed now has two sons with Britney.