[Yuffa]

Any gift sets from Sephora if your gf is into makeup. Their gifts sets have all the best selling products put together for the price of what 1 full-size product usually cost. When in doubt just ask one of the sales and they will tell you which products are most popular as gifts.

On top of my head:
- Urban Decay Naked Palette
- Urban Decay Naked 2
- Clarisonic Skin Cleansing System
- Any nail polish set (girl can never have too many nail polish)
- Any pretty looking make-up brush set (can never have too many brushes)

They have an excellent return policy as well so your gf can just exchange it for something else if she doesn't like it or already have it.

Hope that helps...^^'