She's a mythological being Rhiannon so I wouldn't know :) It's just that the first outfit incorporates more Norse elements and based on famous works of art featuring Valkyrie's most notably Arthur Rackham's. The other, with the loincloth is more fantasy oriented. Valkyries were female "spirits" summoned by Odin to serve him by choosing the bravest heroes who fell in battle and taking them to him in Valhalla where they would constitute his army to fight when Ragnarok would come. At Valhalla, the Valkyries assumed roles more traditionally held by females at the time and donned long robes while serving mead to Odin and the heroes.