Actress Angelina Jolie has cancelled plans to give a lecture in Italy this week (begs29Oct07), amid reports she is pregnant with her and Brad Pitt's second biological child. The Tomb Raider beauty was due to give a talk at the Pio Manzu Centre near Rimini as part of a conference entitled, The Flight Of The Hummingbird - The Future of Children In The Mind And Society Of The World - but pulled out at the last minute. Local newspaper reports claim Jolie cancelled the appearance after discovering she was expecting - and a spokeswoman for the Pio Manzu Centre appeared to 'confirm' the media speculation. Letizia Manjani says, "Angelina cancelled last week. Due to her privacy I can't confirm her pregnancy, but I can say that the Italian newspapers are correct in their reports." Jolie and her boyfriend Pitt have their own biological daughter, 16-month-old Shiloh, as well as their adopted children Maddox, six, Pax, three and Zahara, two. Pitt recently (Oct07) expressed his desire to expand their family once again by saying, "We're ready for another one."