When the Wandenreich conquered Hueco Mundo, Yhwach himself defeated Harribel in battle. She is currently, humiliatingly, chained up and imprisoned in the Wandenreich HQ while still in her Ressurecion. As for your second question; I'm sure there are plenty of regular Cosplay outfits for Harribel to find online, but I severely doubt there is one in different colours. I mean, if it's kinda a made up costume, it's not really a true cosplay of the character anymore, is it?