Penn Badgley, John Legend, and Chase Crawford attend A Lifeline in the Night: A Benefit for Pakistan Flood Relief at the Boom Boom Room. Photo: Getty Images

"Gossip Girl" guys Penn Badgley and Chace Crawford, "90210" actress Jessica Stroup, and "Saturday Night Live" stars Seth Meyers and Kristen Wiig were at New York City's Standard Hotel on Oct. 4 to help raise money for Pakistani flood relief.

The Nur Project event raised over $400,000 -- with the help of a performance by John Legend -- to benefit the International Rescue Committee, which is also accepting donations on its Web site,

Stroup, wearing a gray, above-the-knee Philip Lim dress with a black appliqué pattern, said of the scope of the flood tragedy: "There is a landmass the size of Italy underwater and there are people who need help. And it's getting worse -- there is waterborne disease and there are kids that are affected. So I want to do anything I can to help."

(The actress also bought her own tickets to the event, which is something of a rarity among celebrities at benefits. "I did!" she said, sounding surprised. "I didn't know that people didn't! I thought everybody did?")

Badgley, who helped organize the event, came straight from the "Gossip Girl" set in a tailored Gucci blazer, Marc Jacobs jeans, and Hugo Boss shoes.

"Millions of people have been misplaced, thousands have died," he said of the tragedy. "There's no politics involved in this. To me helping out is just about being a sound human being."

The young actor became thoughtful when asked about the difference between his show and its rival, "90210," which is also on the CW network. "I would say the seeds are the same but, you know, the foliage is infinitely different," he said, a serious look in his eyes. "Because it's New York and L.A."

And with that, Legend struck up the music.

In related news, read about the celebs who posed for Markus Klinko's Keep a Child Alive charity campaign.