San Francisco, California (CNN) -- It was prom night, May 2009, and Linda Rivera of Las Vegas, Nevada, was making goodies for her twin sons' party.

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But prom night beckons, as does the prospect of college, not to mention the end-of-year dramatic production: a chance for Chad (Corbin Bleu), Sharpay (Ashley Tisdale), Kelsi (Olesya Rulin), and the other regulars to parade their extravagant gifts.

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The group has held smaller dress giveaways in recent years to help kids from down-and-out families afford prom night, but this year's event took on new significance after the storm damaged or destroyed tens of thousands of homes in New York, New Jersey and Connecticut.

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The country music group announced last week that Henryville Junior-Senior High School was the winner of its "Own the Night" prom contest based on a video entry submitted by a rival Clark County, Indiana, school.

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Lady Antebellum was already booked April 27, the night of the Henryville prom, so they set aside May 16 for a prom party in KFC YUM!

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O'Brien's routine was well-received, as he closed the night by riffing on the "nerd prom" theme, pointing out how much the event resembled a high school cafeteria.

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