Somewhere between a gilet and a formal waistcoat, a patterned or knitted waistcoat will add some textural interest to a more casual outfit and is a good option if you want to look street smart. You can wear it with pleated trousers in a brighter shade, a workwear or army jacket that matches your trousers and a henley shirt.
If you aren’t sure how to wear your waistcoat, consider pairing it with a texture that is similar to it. A wool waistcoat works well with other types of wool and denim. Once you become more confident with wearing the waistcoat, you can start changing up textures and experimenting a little more. Have a look at the master of street casual dressing, Alessandro Squarzi.
For spring and summer, cotton waistcoat paired with a light blue shirt in linen, chambray or oxford fabric and off-white trousers, is a classic combination, perfect for those times you need to look smart casual. Of course, you’d complete your look with accessories matching your waistcoat.