I love the hat, I love the dress, but I don't love them together. The hat looks too heavy for the dress. Depending on your hairstyle, of course, could you maybe opt for a headband? (If you feel you must have something on your head)
https://www.amazon.com/Casualfashion-Sparkle-Rhinestone-Headbands-Hair/dp/B06WVNKVNN/ref=sr_1_6?crid=CYZGC6YPUA36&keywords=navy%2Bheadband%2Bwomen&qid=1703801972&sprefix=navy%2Bhedband%2Caps%2C103&sr=8-6&th=1