Britney Spears' one-time love rival Shar Jackson has offered the pop superstar a little maternal advice in a new TV interview - "Get to know your kids!"

The singer/actress, who was pregnant with Kevin Federline's second child when he dumped her for Spears, admits she can't believe the singer would prefer to party than spend time with her young sons.

And she's not surprised Spears has been stripped of physical custody of boys Sean Preston, two, and Jayden James, one, who now live with their father.

Jackson says, "I personally think, as a mother, (you should) spend more time with your babies... Get to know your kids. It should be a want and a need. I go crazy when I'm away from my kids."