Jessica Alba Leggy at The Late Show with David Letterman in NYC

Jessica Alba Leggy at The Late Show with David Letterman in NYCJessica Alba visits the "Late Show with David Letterman" at the Ed Sullivan Theater on August 30, 2010 in New York City.Alba has been busy promoting her new movie "Machete," in which she reunites with filmmaker Robert Rodriguez, who she previously worked with on "Sin City.""He's so inspiring," Alba said of Rodriguez in an interview