Lindsay Lohan's image is once again causing problems -- but this time it has nothing to do with her late night partying.
TMZ has obtained a lawsuit, filed today in federal court, in which a photographer claims he was hired to shoot pics of Lindsay for a fashion line called 6126. The photog, Scott Nathan, claims he was promised a 1% interest in the clothing line in return for his work.
According to the suit, Nathan never got the 1% he was promised.
But that's not all -- Nathan is also suing Universal Music Group, claiming one of the images he shot for the fashion line somehow ended up as the cover for Lindsay's song, "Bossy."
Nathan is seeking unspecified damages.