NOV. 21, 8PM
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Jennifer Lopez

Kevin Mazur/WireImage

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We need your help settling a pretty serious debate going on inside the E! offices: Did Jennifer Lopez know her shirt was totally see-through when she decided to wear it? Or was it an unfortunate accident?

Both sides have gathered their evidence:

Of Course She Knew: Jenny from the block is no stranger to sexy style. She's revealed more than a bra before, so chances are she made a deliberate choice with this Dolce & Gabanna number, knowing that it would raise eyebrows.

No Way She Knew: That bra looks like something our grandma would wear! If the former American Idol judge knew she'd be showing off her undergarments, she surely would have selected a little lacy number, right?!

It's up to you to decide.

Let us know in the comments whether you think J.Lo's peepshow was on purpose!

PHOTOS: Check out more of J.Lo's red carpet-ready looks!