Admittedly this is a little risky. More than a little, actually. It looks heavy, too. But oh so pretty.
1-3. You sneak it out of the wardrobe. There's a mirror there. Might as well try it on... Oh no! Guards!
4-6. You casually pick it and go on to enter the grand salon. +1 courage for you!
Continue to the grand salon if you escape the guards.