Cardi dressed as Cruella De Vil and brought her dalmation friend. We're gonna go ahead and assume the fur is not real dog, though. She gets points for her four-legged prop, but we noticed no red bottoms or bloody shoes ... which seem perfect for Cruella.

Unclear if she was wearing her new shiny 8-carat engagement ring from Offset under those gloves -- but there were plenty of other eye-catchers inside the event.

If Cardi as Cruella doesn't scare you, no evil thing will ...