My sister will get married soon. As one of the guests, I need to stand at the door with her to receive the guests attending the wedding. What should I wear?

The best way to greet guests is to wear skirts. You can talk to your sister and ask her to rent you a small dress in the wedding dress shop. Shops usually have this kind of clothes. If you still want to wear your own skirt, you can choose a top with the same color and add some festive details, such as using silk scarves as a belt that is more suitable for the atmosphere.