J.Lo at 40: How a Diva Was Made!

In 40 photos, see how the birthday girl (on July 24) went from Jenny from the Block to superstar

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YES, I'M PREGNANT!

"Marc and I are expecting a baby!" Lopez announces to a not-so-shocked crowd on Nov. 7, 2007 – the final stop of the El Cantante tour. She later jokes about hiding her pregnancy to Harper's Bazaar, saying, "I kind of feel like everybody knew anyway. I was on tour with a bubble gut!"