@flowersandmusic As the wedding is next year, why not keep it? The sleeves would be difficult to put into a jacket, but on a warm day, it’s great. As long as you have the money, keep it.
We tend to think the mums of the bride and groom should look more formal and special, but achieving that is so difficult.
Princess Anne keeps everything for decades but it looks like it too. She is herself but she’s not fashionable. If you want something better, there’s more fashionable people around for inspiration. Carole Middleton for starters!