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- Twins: Knox Leon and Vivienne Marcheline Jolie-PittDaily News: Report: Brad Pitt, Angelina Jolie Twins Conceived Through In Vitro (July 24, 2008)
- Twins born: July 12, 2008Daily News: Report: Brad Pitt, Angelina Jolie Twins Conceived Through In Vitro (July 24, 2008)
- Twins reportedly conceived via in vitro fertilizationUs Magazine: Exclusive: Actress Angelina Jolie's Twins Conceived Through in Vitro! (July 24, 2008)
- Twins' father: Brad Pitt
- Twins' mother: Angelina Jolie
- Brad Pitt born: December 18, 1963
- Angelina Jolie born: June 4, 1975
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According to Us Weekly, Angelina Jolie's recently birthed twins were conceived via in vitro fertilization. Jolie reportedly wanted to have more children while she and husband Brad Pitt were still young, so she chose to have the in vitro treatments rather than attempt to rely on natural conception.Us Magazine: Exclusive: Actress Angelina Jolie's Twins Conceived Through in Vitro! (July 24, 2008)
In Vitro and Fraternal Twins
According to doctors, the chances of a couple bearing fraternal twins through natural conception is under one percent. However, in vitro fertilization raises that chance to 25 percent.Us Magazine: Exclusive: Actress Angelina Jolie's Twins Conceived Through in Vitro! (July 24, 2008) Jolie gave birth to fraternal twins Knox Leon and Vivienne Marcheline Jolie-Pitt on July 12, 2008.Daily News: Report: Brad Pitt, Angelina Jolie Twins Conceived Through In Vitro (July 24, 2008)