Esther 2:17 (ESV)

17 the king loved Esther more than all the women, and she won grace and favor in his sight more than all the virgins, so that he set the royal crown on her head and made her queen instead of Vashti.

Apparently Esther made such a great impression on the king that he did not even send her to the other part of his harem, nor did he wait until he could meet all the other girls. After their night together, he put the royal crown on Esther’s head. She was his chosen queen.