AJ McLean: Backstreet Boy Photos -- Naked Chicks and 'Halo'

Backstreet Boy AJ Mclean got his hands on a bottle of Jack Daniels, a costume from the "Halo" video game, and a butt-naked lady -- and posed up for one of the most random photo shoots we've ever seen.

 

It was all for a session with photographer Tyler Shields -- the guy who shot those semi-naked Lindsay Lohan "Inferno" pics.

AJ has been battling his issues with alcohol for years -- and we're guessing this whole thing was some sort of artistic interpretation of his inner struggle.

Either way -- NAKED CHICK! 

[TMZ]