Yes, a double breasted jacket is one of the most formal jackets you can wear, but it can also be dressed down for that Riviera-look we all love.
When it comes to DBs a snug fit, right fabrics and a good color are the key-elements.
For spring and summer:
I think any color goes except black and maybe really dark shades of grey. When it comes to fabric, I recommend cotton, cotton-silk, very fine wool (such as Super 150's) and wool-mohair mix. Linen isn't very well suited for a DB, because it gets stretched out of shape very easily. Also no polyester, viscose etc.






photos: webuomo.com