Who's the Boss

We are knee deep in Halloween costume preparations. The scouts have a Spook Alley next week and all the kids will be going. So mostly I've been trying to give them things to do to keep them occupied while I am sewing. Of course Olive's costume has been the most labor intensive and the most elaborate thing I've made. In accordance with Olive's princess type rules she will have nothing to do with it now that it's done. Why does she do this?!?