The Jolie-Pitt Family with new twins Knox an Vivienne

Angelina Jolie has shot down reports she and Brad Pitt conceived their twins via in vitro fertilization. The 'Tomb Raider' star -- who gave birth to Knox Leon and Vivienne Marcheline on July 12 -- insists she and Brad have never needed to resort to fertility treatment. She tells Hello! magazine, "If they had been conceived through IVF we would have been happy to discuss it. "But we have been fortunate never to have had fertility problems."

Meanwhile, Brad revealed Angelina is breast-feeding the two babies and has been attempting to feed the two at the same time. He said, "We try to get them to eat simultaneously for the sake of time management, but it gets a little crowded at the bar."

The 44-year-old actor also said he was in awe of Angelina during the pregnancy and subsequent arrival of the twins via caesarean section. He said, "I find the process absolutely heroic."

Pictures of Brad, Angelina and the twins were sold to Hello! for a whopping $15m, making them the most expensive baby pictures ever. A sales assistant in WH Smiths in central London told the Daily Mail, "The issue has been selling really well. Every other person who comes in is buying it."

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