The biggest names in the biz were shining brightly and dressed to the nines during last night's American Music Awards.

And since our girl Tracee Ellis Ross was hosting this year, you already knew we were willing to skip one night of RHOA to show our support — plus, hear Christina Aguilera's Whitney Houston tribute.

But back to the fashion, the celebs were showing up (and out), making the red carpet seriously sizzle. Here are 13 looks we thought shut it down: