The singers of "2 Different Tears" recently met up with Leighton Meester from "Gossip Girl", and in conjunction with the photos we've got down below, it appears that their circle of celebrity acquaintances keeps expanding. Attending�Vivienne Tam's show, the girls posed with tennis champion Serena Williams and the designer herself. I'm loving Yubin's look right here - the gold shimmer of the dress against her auburn hair really brings out her stunning complexion. The Wonder Girls also attended Yohji Yamamoto's "Y-3" Adidas show, and bumped into R&B singer and dancer�Omarion. Looking good, girls! Photos courtesy of: JYP Entertainment