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

A GLAM GUEST

In Rome to attend the wedding of Tom Cruise and Katie Holmes, all eyes are on Lopez as she wears a stunning one-shouldered Marchesa gown to their rehearsal dinner on Nov. 16, 2006. On the bride? A demure pantsuit.