There are some pretty, gauzy toppers. Ann Taylor did one a cardigan that’s almost a mesh fabric. Anything that has a fine gauge to the fabric will work. Even lace type construction are nice, and they keep you cool. Otherwise a flutter or cap sleeve sleeve is pretty. Those would be nice addition to the spaghetti straps or tank tops while still staying cool. That sleeveless top that I showed in the photos, that’s a nice option. There’s a lot of those in lots of different colors. Target has some in stock right now that would be worth looking at for sure.