No, in GW the costumes (outfits) were separate head and body gear that you could use independently from one another. You could for example; wear a nice Wintersday hat with your Grenth regalia during the festivities, or wear your fancy Pumpkin crown with the Grenth regalia to look like a minion of the Mad King. I'd love to be able to do this again. More truthfully I would like to be able to equip different parts of different outfits as we do our normal armor.