The giant Thrym (King of Jotunheim, home of the giants) stole Thor's hammer, in order to extort the gods into giving him the beautiful goddess Freya in marriage for its return. Freya refused to leave Odin, so Thor dressed himself as a bride and, with Loki dressed as a bridesmaid in attendance, went to Jotunheim in the role of Freya. When Thrym produced the hammer, Thor seized it and killed all the giants present.
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