Is this what an old lady looks like, Amanda Bynes?!
We think a whole lotta men are going to go hunting for some old ladies if that's the case!
Wearing a teeny tiny black tank top paired with a long sparkly blue Tom Ford cutout skirt, Jenny most def looks ready for some serious partying.
We're not lovin' the heavy boots, but c'mon, we ALL know no one is looking at her feet!
[Image via Getty Images.]