Last night's Girls' Generation appearance on "Late night With David Letternan" was a winner in America. It looks like there is a new generation of Girls' Generation now. Here's what some Americans had to say:

@Chrisbrandt8

Not sure who these girls are on Letterman but I think I'm a fan.

@DanteMarquis

They put American pop singers to shame.

@MrHeadrick 

I liked that girls band that was form South Korea