As always this outfit is super expensive or sold out, but since denim is the fabric of summer 2015 you will find it everywhere: H&M, Zara, Macy’s or some more expensive shops like mrporter or luisaviaroma.
Sunglasses: Dolce & Gabbana ~140€
Denim shirt: Dsquared (~260€; sold out)
Jeans: Dsquared (~380€; sold out)
Belt: Gucci ~240€
Shoes: Nike Air Force Elite ~110€
Travel toiletry bag: Gucci ~340€
Of course you can find similar pieces on websites like Zalando or in the stores I mentioned above. I think you can recreate this outfit for ~250€. Check out the H&M jeans section for jeans and shirt, Zalando for shoes and belt and get a JOOP! t-shirt for ~30€. The toiletry bag is obviously not necessary, but if you want to copy every piece you can get a smiliar one for 30 or 40€. In my opinion it looks stupid to walk around with a travel toiletry bag. Try to get a nice backpack instead. This would be a bit more expensive but it doesn’t look that stupid and it’s universally usable.
Be prepared for summer 2015 with this cool denim outfit!