The 45-year-old actress - who now possesses a curvaceous figure - admitted she was "really scared" when she didn`t develop as quickly as her classmates and so appealed to Christ in a bid to boost her bust.
She explained: "I was the youngest in class and all these girls were starting to get breasts and I wasn`t getting anything - I was really scared. I was getting teased a lot because everyone was older and I was the skinny tomboy.`
"I went to a church that had a saint that was supposed to do a lot of miracles. I put my hands in the holy water and went, `Please Jesus, give me some boobs`."
Meanwhile, the Mexican star also explained she barely spoke English when she first arrived in the US to pursue her dreams of being an actress, and got confused when she read her first review.
Salma added in an interview on UK TV show `The Graham Norton Show`: "I was upset by one review because it said, `SalmaHayek, bombshell`. I thought they meant the movie bombed because it was so bad."