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

MINT CONDITION

Instead of shocking at the 2003 Academy Awards, Lopez goes for pure glamour, landing at the top of best-dressed lists in this one-shouldered Valentino, which was based on a design for former First Lady Jackie Kennedy.