January Jones found out that she was pregnant while filming Mad Men, where she portrayed "Betty Draper." The show's writers decided to make "Betty" gain some weight due to medical conditions!
The Indian-Americandirector Mira Nair was surprised after Reese Witherspoon announced her pregnancy while shooting Vanity Fair. Nair had previously asked Witherspoon -as a joke- to get pregnant for her role as "Becky"
