Halloween help!!

Hi ladies. My bf and I are trying to figure out what we should be for Halloween. I have these black timberland high heel boots that I would like to put to use but I don’t want to appear slutty. All suggestions are welcome. I want to stay warm this Halloween as it is going to be FREEZING!! Nothing low cut, nothing short, trying to keep it comfortable. Thank you so much! :)

And before anyone says that maybe I shouldn’t dress us this year because of COVID, yes I understand that we are all still at risk, but I love to dress up and my bf and I are going to family’s house for a Halloween party ( family only)