Kris Allen in Concert -- XYZ!
Kris Allen A Window Into My Crotch
Kris Allen didn't just open for Lady Antebellum last night at the Wiltern in L.A. ... he also opened his fly for the entire audience.
![](https://imagez.tmz.com/image/51/16by9/2011/12/17/51579b6f404c50ba99a678d6a5e53ad4_md.jpg)
After getting through his first set without any hardware malfunctions, the "American Idol" champ returned to the stage at the end of the show to perform "Hey Jude" -- with his zipper down.
Check out his reaction when someone in the audience tells him to XYZ -- priceless.