Back in July, Alexa Vega posted a revealing photo from the set of Machete Kills, which had the Internet abuzz with comments about the former Spy Kids star and her provocative new look. Today, the actress shared yet another photo featuring her full costume as the villainous Killjoy. As you can see from the photo, the term "full costume" is somewhat of an oxymoron. We still don't know many details about her character, but who needs details with photos like this. Check out this new shot, which will be featured in the latest issue of Rolling Stone magazine, along with her message she sent out through Twitter.