Jennifer Lopez Laughs Off Oscars Wardrobe Malfunction Drama

TMZ spoke with Rob Zangardi ...who personally zipped J.Lo into her Oscars dress ... and then helped her change into another low cut outfit after the show.

Rob tells us ... he and fellow stylist Mariel Haenn personally informed Lopez about the buzz surrounding her areola during the outfit change ... and J.Lo simply laughed it off.

Rob says ... Lopez then assured the team she was so tightly packed into her dress, there was no possible way a nip could've slipped.