This fragrance from Christina Aguilera could work well for a number of occasions. 30 ml is a small packaging, but that also means you can take it in your carry-on when traveling.
From OnBuy
Christina Aguilera Unforgettable Eau de Parfum 30ml Spray
Parfumdreams
Christina Aguilera Women's fragrances Unforgettable Eau de Parfum Spray