Twins Again for Angelina Jolie and Brad Pitt

Having twin children, Vivienne and Knox, is apparently not enough for Hollywood's golden couple Angelina Jolie and Brad Pitt. The pair, who have six kids, are adding another set of twins to their family, according to Star magazine.

Doctors are said to have told Angelina that she has a strong chance of conceiving twins. Thus, the 33-year-old actress is reportedly undergoing secret fertility treatments and taking prenatal vitamins to add babies number seven and eight to the Jolie-Pitt clan.

"Angie's doctors told her that she has a strong chance of conceiving twins if she does it within two years after having her first pair," a pal tells Star. "She's been seeing a fertility doctor regularly. She and Brad are monitoring when she's fertile. And they're trying really hard in the bedroom!"

And Angelina's conception secrets are supposedly yams and orange juice. The pal reveals, "A friend told her that yams and orange juice will increase her chances [of getting pregnant with twins]."

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