Heidi Klum hit the red carpet at this evening's American Music Awards in LA. She was decked out in a gold mini from designer Alexandre Vauthier for the occasion. Heidi tweeted earlier in the afternoon about prepping for the big show with the help of makeup artist Sabrina Bedrani and hairstylist Eric Gabriel. Heidi's presenting tonight, but last weekend, she was in her native Germany to actually host a big awards program, the MTV EMAs. It will be a little bit before Heidi's got the mic tonight — in the meantime, watch the American Music Awards preshow online now!