וַיְהִ֣י ׀ בַּיּ֣וֹם הַשְּׁלִישִׁ֗י וַתִּלְבַּ֤שׁ אֶסְתֵּר֙ מַלְכ֔וּת וַֽתַּעֲמֹ֞ד בַּחֲצַ֤ר בֵּית־הַמֶּ֙לֶךְ֙ הַפְּנִימִ֔ית נֹ֖כַח בֵּ֣ית הַמֶּ֑לֶךְ וְ֠הַמֶּלֶךְ יוֹשֵׁ֞ב עַל־כִּסֵּ֤א מַלְכוּתוֹ֙ בְּבֵ֣ית הַמַּלְכ֔וּת נֹ֖כַח פֶּ֥תַח הַבָּֽיִת׃
Now it came to pass on the third day, that Esther put on her royal apparel, and stood in the inner court of the king’s house, over against the king’s house; and the king sat upon his royal throne in the royal house, over against the entrance of the house.
Zohar
You may say that Esther has a bad reputation (by saying) that she was defiled with Ahasuerus, yet she was worthy that the Holy Spirit, (Malchut), would be clothed in her as written, "Esther put on her royal apparel, מַלְכוּת" (Esther 5:1). Yet the Holy One, blessed be He, said, "I am Hashem, that is My name, and My glory will I not give to another, neither My praise to carved idols" (Isaiah 42:8). The Holy Spirit is the Shechinah and is a name that was clothed with Esther.