Jennifer Lopez's Oscar wardrobe malfunction! Did she or didn't she?

Did she or didn't she? 

While Twitter is all abuzz with news that Jennifer Lopez had a wardrobe malfunction -- eeks -- onstage, while presenting the best costume design and best makeup Oscars with Cameron Diaz at the Academy Awards. Well, we're not so sure.

Of course, wearing a dress like that -- a couture custom Zuhair Murad gown -- with (and this is an understatement) a deep, deep plunging neckline -- well it could have happened.

But according to Lopez's stylist, it definitely did not. 

"The dress fit perfectly to her every inch," Mariel Haenn, told E! News. "There were cups built in and there's no chance that there were any, how do you say? 'Slips.' While the dress did give the illusion of sheerness, [the] joke's on everyone who wishes they saw something!"

Lopez knows her way around double-stick tape -- remember that Versace?  We think it was borderline . . .and maybe narrowly, -- avoided.