This fragrance from Kenzo could work well for a number of occasions. Maybe this could be an nice gift for your sister?
From OnBuy
Kenzo Flower 100ml EDT Spray
Peacock Bazaar
Kenzo Flower Eau de Toilette 100ml, 50ml & 30ml Spray - Peacock Bazaar - 100ml
This product is also available at 3 unverified stores.