Throwing on a pair of jeans and a tee takes little thought, but can make a huge impact. Celebrities have mastered the casual cool outfit by taking the style from day-to-night, staying comfy while jet setting, and dressing up an otherwise simple style with statement accessories. They’ve given the most basic of basics a punch of glam. So whether you’re running errands or just prefer to skip the mini dress tonight, check out how these stars are rocking this laid-back look.