I'm not sure if we will do Halloween costumes or not this year, as our usual Halloween party is cancelled, but if we do...

I know DD would love to coordinate with her brother - other than Christmas jammies last year, we haven't really done matching or coordinating stuff for them. I know I've seen cute coordinating costume ideas before - anyone want to refresh my memory? DD will be just a few days shy of 4 years old, and DS will be 18 months. Thanks!