It's your sister's birthday. As a girl, you should care about your birthday very much. Girls hope to receive many gifts on their birthdays. They will feel pampered. As a younger brother, you must also send your blessings. Here are some suggestions for you:
1. Girls still like fashionable gifts. If possible, you can give her some beautiful accessories, such as crystal pendants, or beautiful bracelets, necklaces, etc., which are all good. And the necklace can be customized with your name.