Angelina Jolie too skinny to get pregnant

Though they are already parents to four young children - daughters Zahara and Shiloh and sons Pax and Maddox - Angelina Jolie and Brad Pitt are ready to expand their family again. The problem is that Jolie hopes to have another biological child this year and she has been told that she is too skinny to do so.

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The Sun reports that Jolie recently visited her doctor's office, thinking that she was pregnant again. But Dr. Jason Rothbart, who delivered Shiloh, told her otherwise.

Says an insider, "Angelina is desperate to get pregnant again, but doctors say she is just too thin. She convinced herself she was already pregnant so was heartbroken."