Angelina Jolie is already raising 6 children with her partner and wants to have another baby in the summer, for this she is on a special diet to help her fall pregnant.

The 33-year-old star is doing all possible to fall pregnant again, including taking prenatal vitamins seeing her obstetrician regularly and has dramatically cut down on her junk-food consumption.

It has been claimed doctors previously advised Angelina against trying for another baby for a year after her twins Knox and Vivienne were born last July.

Jolie is determined to follow her strict schedule and conceive again as soon as the 12 months have passed.

The source added to America's OK! magazine: Her goal is to be pregnant by the time Knox and Vivienne have their first birthday. Angelina is one of those people who always manages to achieve whatever she wants.

Brad and Angelina, along with their twins, also have three adopted children - seven-year-old Maddox, Pax, 5, and Zahara, 4 - as well as a two-year-old biological daughter Shiloh.