Ellen is a 1976 graduate of Atlanta High School in Texas. In response to her awkward prom photo, Ellen joked, "Now there's proof that it really does get better." As for her choice of plaid tarp dress? "It was the Seventies ... that's my excuse!"
Clooney attended prom at Augusta High School in Kentucky in 1978, during his junior year.
In 1988, the future Oscar winner was voted "Most Handsome Student" at his Longview High School prom in Texas.
Already an aspiring actress, Ryan went to her prom at Bethel High School in Connecticut in 1979.
The eminent actress was a cheerleader and homecoming queen at Bernards High School in New Jersey, where she attended prom in 1967.
In 1986, Messing went with big hair to the prom at East Greenwich High in Rhode Island, where she starred in school productions of "Annie" and "Grease."
Although already well on her way to supermodel stardom, Banks still found time for her senior prom at Los Angeles' Immaculate Heart High School in 1991.
Romney (far left), who boosted school spirit as a member of the Pep Squad, attended prom at the Cranbrook School in Bloomfield Hills, Michigan, in 1965.
The "Lost" star went with a white suit for his prom at Wind River High School in Pavillon, Wyoming, in 1984.
The country pop singer attended prom in Mississippi in 1986, shortly before she moved to Nashville.
The future candidate for Vice President attended prom at Wasilla High School with her soon-to-be husband, Todd.
A cheerleader at Bedford High School in Ohio, Berry was also prom queen in 1984.
The future First Lady chose a revealing champagne dress for her senior prom at Whitney Young High School in Chicago. She graduated in 1981, number two in her class.
Danes attended prom in 1997, more than two years after her breakthrough starring role in "My So-Called Life."