If you'd like just a hint of fragrance and find most perfumes too heavy, there are alternatives:

Try a perfume oil.
These oils use a combination of essences which make them last longer than essential oils. Look for: Clarins Eau Dynamisante; Truth Calvin Klein Body Oil Spray; and Body Time Natural Perfume in Vanilla-Orange-Ginger.
Scent your hair.
More and more fine fragrances are showing up in hair care products. Guerlain's Shalimar Beautifying Hair Gel holds hair and adds a light spicy-floral fragrance. Gucci Envy Scented Hair Shine Spray has a fresh scent that lasts all day.
Smooth on a body lotion.Scented moisturizers have less intensity than your eau de toilette, so it's a great alternative if you don't want to live without your favorite perfume but you want a lighter scent. Some even contain golden or pearlized sparkles. Try the delicate floral scent of Prescriptives Potion Sparkling Body Moisture or the fruity and vanilla Azzura Shimmering Body Moisturizer.