Awkward and awesome prom pictures of the biggest celebrities in the business High school proms are a big deal for many high-schoolers, becoming both a source of stress and excitement for teens on the cusp of establishing their first steps into adulthood. In some ways, they may not be so different from us after all: graduation, acne and decisions about which college to attend all likely taunted America’s budding stars in high school. Prom has come to take a larger-than-life meaning in North American culture, so much so that certain celebrities attend it despite already having a successful career and bigger opportunities. For those who were already in the limelight,…