Come Summer, I like to ditch the blazer for daytime (unless I’m at a formal event) and opt for a vest only look.  A well fitted vest will  accentuate the waistline while giving off a cool and sophisticated vibe.  Since it gets pretty hot in LA, versatility with less layers is key to survival! You can switch out the blue shirt for a white and cuff up the sleeves.  You can choose to add a tie or throw on chinos rather than denim.  However you spin it, you’ll still look great- with a an appropriately fitted vest.