Cute, Comfortable & Compact

Europe is in 28 days and the biggest current stress? What to wear there! All I want is comfort, casualness, and chicness. (My biggest challenge will be to fit five weeks worth of goods in a backpack)
Inspirations:

 

Lots of denim shorts, t-shirts, tunics over shorts and possibly a feminine raincoat for those maybe rainy days.

Sources: J.Crew, Free People, Song of Style, Google Images