Entertainment Tonight ET Online ETOnline.com

First Lady Michelle Obama spoke at an event held at Gwen Stefani's Beverly Hills home on Sunday, gearing her speech towards America's youth.

"Barack can't do it alone. He's not Spider-Man. He's not a superhero. He's a human, so we need your help," Mrs. Obama said, wearing a sleeveless navy dress and flat sandals. "I am not just talking to the adults here today. I am talking to the young people here as well."

RELATED: Michelle Obama Fantasizes of Being Beyonce

The gala, billed as a "Sunday of Fun," was held to benefit the Obama Victory Fund. Guests donated at least $2,500 for a family of four.

"All of our young people -- you might not be old enough to vote. You vote at school, I know -- I met several young people who are going to be voting for my husband, who are 10 and under -- we accept those votes," she said, to cheers and laughter from the 400 guests in attendance. "But you can play an important role in this election, too. I want you all to feel empowered."

Stefani's No Doubt bandmates (Tony Ashwin Kanal, Adrian Young, Tom Dumont, Gabrial McNair and Stephen Bradley) were also present.