This Fall 2009 fashion had a love affair with leather and trousers were one of the preferred ways to show it off... Designers like Matthew Williamson and Marc Jacobs experimented with color while gothic brands like Ohne Titel and Rad Hourani turned out classic black styles. Although they didn't have the same impact as leather over-the-knee boots did, leather trousers are a definite trend for Fall 2009. Check out a few pairs we find memorable in the gallery below.