Desperate to get pregnant, Halle Berry and partner Gabriel Aubry had sex at every opportunity.
And, so determined were they that Berry told Oprah Winfrey that she and Aubry even gave up socialising to stay at home and make love.
"We tried really hard, so it was a lot of staying home and just doing what you do," The Sun quoted her, as telling Oprah.
"I'm sort of superstitious, so I saved all of the negative tests in a drawer. Don't ask! I don't know why, but I did. After about 35 tests, we finally got a positive test."
Berry also told Oprah that she and Aubry did not know the sex of their baby, and would be waiting to find out.
"There's so few genuine surprises in life anymore that, why not have a huge surprise? And I like fantasizing one day it's a girl, one day it's a boy," she said.