There's nothing quite as all-American than a white t-shirt and blue jeans. Separately, they're versatile pieces but together they make a simple yet classic outfit that will never go out of style.  I was in LA last week and wanted to wear something simple and casual. I took a modern twist on this American classic by pairing my white crew neck with cropped wide leg jeans with a distressed hem.The white tee and jean combo is effortlessly chic and is a combination that can be worn any day of the year and season. It's also very easy to layer over like I did with a blazer. I threw on a black blazer…