OK! Exclusive: Britney Not Pregnant!

Despite a tabloid cover story that declares pop star Britney Spears is once again pregnant, OK! can exclusively confirm that the pop star is anything but expecting.

"She's furious at InTouch," a close pal of Britney reveals to OK!, referring to their item that the mother of two is expecting a child from music producer J.R. Rotem. "The story is a complete lie. She does

not even see or talk to J.R., and she hasn't had any dealings with

him in months."

According to the friend, Brit, who celebrates her 26th birthday this weekend, is busy working on her latest video and is truly upset that these sorts of lies are being spread about her.

"She's thinking about suing," explains the pal. "She's so mad. She's worked so hard at

being a working mom and resolving legal issues. To have such a messed

up lie come out like this now really angers her. She is serious

about wanting to sue."