Throw a bright blazer over anything and it gives your entire ensemble some sass.  Contrary to tradition, blazers do not have to hide in the darkness of muted navies, grays, and blacks.  The greatest thing about a colorful piece like this is its versatility; you can go from work to dinner without having to change and it can be paired with virtually anything.  I prefer to wear a colorful jacket over neutral tones so it really pops.  This is definitely a must have.  

Blazer: Vintage Yves Saint Laurent
Dress: All Saints
Bag: Alexander Wang 'Coco' Bag
Studded shoes: Sam Edelman