We're too obsessed with both looks to call for a Fashion Face-Off, but we'll confess that "Bad Sandy" might still reign supreme.

Her tucked, off-the-shoulder shirt is somehow sexier than the British beauty's cropped top option. It might be that waist-cinching gold belt that brings it all together...or the lipstick red sandals...or the fact that the image of Olivia surprising a wow-ed John Travolta is burned into our minds for life—but we prefer the original to an homage.

Share your thoughts in comments and tune-in to an all new Fashion Police this Friday, 9/8c on E!