J.Lo does her own stunts

Jennifer Lopez, may not be doing all her stunts, but when she does she leaps 20 feet off the hood of a car in 5 inch stilettos.

Sources have told TMZ.com that Lopez is filming a super secret national commercial campaign, which is set to air during the American Music Awards.

Sources said that her stunt includes taking a running jump and flying through the air from the hood of one car to another.