It's nice to know that the white t-shirt and jeans look will never get old. You can dress it up, dress it down, girly, punk, comfy, sweet, sexy, young, old, risque... This is me running into people who also love the look in one day:
Shirt from Zara (on sale, baby), Belt from Mango, Purse from H&M, Shoes from some local Filipino shoe store that starts with a "J". Helpful, I know.