I love Spring and Summer fragrances...I wear them all throughout the year. I'm just not a big fan of heavier "Winter" scents. One of my absolute favorites is Marc Jacob's Daisy Eau So Fresh. The scent is pretty and light, and the bottle is charming with little pink white and yellow daisies on top.
Other personal favorites of mine are:
Bulgarri's Omni Crystalline (and the new Omni Coral)
Chanel's Chance au Tendre (the au Fraiche is nice too)