Beyonce's kid sister had quite the year in 2012. First, she became an aunt (and maybe the world's most famous babysitter). Less than a week later, she signed a contract with Next Model Agency, who also represent fellow musical model Lana Del Rey among others, which prompted Vogue UK to crown her the "next big thing." Finally, she went on to prove the legendary fashion rag right by becoming the face of J. Crew's Madewell brand. She also released the critically adored single, "Losing You," for good measure.