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Harem pants, red studded loafers and a shiny tank top aren't what most guys would wear, but most guys aren't Justin Bieber!

The 18-year-old pop phenom posed for a few solo photos at the 2012 American Music Awards tonight, but he did bring a plus one -- his mom Pattie! Sure, he may be having sleepovers with on again/off again girlfriend Selena Gomez, but it doesn't look like they're ready to make any red carpet appearances just yet...

Justin just nabbed the award for Favorite Pop/Rock Male Artist, and he's also nominated for Artist of the Year and Favorite Pop/Rock Album for Believe ... think he'll win all three?!