Shar Jackon(L), the ex-girlfriend of Britney Spears(R)' husband says she isn't surprised to hear that the pop singer is pregnant, but the pair are making a mistake.(AP photo) BEIJING, April 26(Xinhuanet)-- Shar Jackson, the ex-girlfriend of Britney Spears' husband says she isn't surprised to hear that the pop singer is pregnant. Shar is becoming increasingly vocal since the announcement Brit's three months gone.Shar is mother to his two previous babies and is adamant he shouldn't have a third.

Shar Jackson, the mother of Kevin Federline's two children, recently told Access Hollywood her former fiance would be a good father to his newest, soon-to-be born baby with wife Britney Spears, the New York Post reports that Jackson told In Touch Weekly that the pair are making a mistake. Jackson said,"A baby is not a dog. You can't just put it away. I don't know if Britney realizes how hard it will be."

And on top of that, Shar claims dancer Kev is going under after hearing he's about to become a dad for a third time.

She added:"He has told me it is really a lot, what with a breakup, a wedding and two babies in a year."In July 2004, Spears has told People magazine she plans to meet Federline's children and would like children of her own someday.

"I definitely want to have some kids," she said."I see myself with four or five."

Jackson said she is willing to let her kids have a relationship with Spears' child."I mean, they're family, so if the other side of the family permits, then yeah," she said. Click for Britney mini-album>>

Britney and her husband Kevin

Federline

(Agencies)