Here's the short, straight to the point clip. Taken from the theatrical cut:
Clip: https://mega.nz/file/aBJF3SaQ#wy_GcFd86 ... QKt6nKdWkI
*Graphic Content Warning*
This is a longer edit. It's taken from the extended cut, but there's no difference in the content of the actual scene:
Clip: https://mega.nz/file/HMpkWLgR#30hXz1nsk ... PWetyhjLSA
This is green screen footage, from the scene. Unfortunately all of the green screen footage is very sped up in the special features and not mastered in HD for the first Sin City. So, I had to slow it down:
Clip: https://mega.nz/file/WJJA0SQT#c-S3ndfpT ... FyFYaQVsz0
Now for the bonus content;
Here is every Jessica Alba dancing scene from both Sin City (2005) and Sin City: A Dame to Kill For (2014), with sound removed, mostly everything but Alba removed and slowed down. It also includes all available green screen footage from each scene.
Clip: https://mega.nz/file/OdxEDaSJ#X_kPnzrVJ ... xyPqDKCk8Q
...And finally. The last dance from A Dame to Kill For, which includes the self-smacks, in its entirety, at normal speed and with sound.
Clip: https://mega.nz/file/WMxlGIZQ#Oh81I3kFe ... A1H3ygvSCE