The Shikker Dovid has an all time favorite idea for Purim. The Megila says in Chapter 5, verse 1.
“On the third day put on her royalty.” The Megila does not say “put on her royal clothes”, rather her “royalty.” The Talmud says on page 14 that she wrapped herself or was clothed in ‘ruach hakodesh.” or holiness.
The Shikkerdovid likes to suggest that the “royalty” does not refer to her clothes. It refers to her character. Her fine and graceful nature. She was accepted as Queen and won the heart of Ahashversosh because of her inner beauty and character.
The lesson is that clothes do not make you important, fancy or give you character. Your character gives you character.