Over the weekend, the Wonder Girls rocked it out at the MTV World Stage in Malaysia. �But when they weren't rocking out on stage, they were busy getting acquainted with American singers, such as�Katy Perry. And... there just may be the possibility of a collaboration, as Katy Perry said she wanted to work with singers such as, Rihanna, John Mayer, Kanye West and the Wonder Girls! More photos on their official site, wondergirlsworld.com.