Jennifer Lopez Took 20 Pregnancy Tests 9/3/08

Jennifer Lopez was so determined to make sure she was pregnant when she first thought she was with child, she took 20 tests - and even asked her husband Marc Anthony to pee on a stick.

The actress/singer admits to feeling "a flutter" during a hair and make-up session - and it sent her to the nearest pharmacy.

She tells the upcoming issue of Elle magazine she dashed home with her pregnancy tests in an effort to be sure - and she even insisted Anthony took one. She explains, "I needed to see what a negative looked like." Lopez gave birth to twins Emme and Max on 22 February (08).