Movies Watch Jessica Alba's Sexy Striptease Published 5:58 PM PDT, August 20, 2014 ETONLINE ET has sexy home videos of Jessica Alba's striptease for Sin City: A Dame to Kill For, and we got her and her co-stars' reactions to it.PICS: Must-See Celeb Sightings It's been almost ten years since the first Sin City, but judging by the video, Alba hasn't lost a step."Jennifer's dancing is amazing," said Josh Brolin. "She's very easy to watch dance," Bruce Willis agreed.Willis and Brolin have choreographer Jennifer Johnson of JJ Dancer and Cosmobody.com to thank for that. She created the dances that she and Alba rehearsed five hours a day to get down.Watch the video to find out what Alba's husband Cash Warren had to say about her sexy moves. Sin City: A Dame to Kill For opens August 22.