K-Fed's Other Babymama on Drama

Her ex became the ex-Mrs. Spears -- so it's no surprise Shar Jackson gets asked about her successor every time cameras catch her. That's gotta be annoying. Will she be called Auntie Shar by Brit's boys?

TMZ spotted Shar doing some shopping at Diabless on Melrose yesterday -- and got her to talk about the tough situation between Britney and her baby daddy.