Nicole Richie and Joel Madden joined Queen Latifah, Zac Efron, and Vanessa Hudgens to shoot a Funny or Die video in LA yesterday. We got a peek at Zac's muscles before he put his shirt back on, so it looks like the final product should be hot. After filming, Nicole wrote on her brand new Twitter that she and Vanessa are now besties. Joel also complimented the younger couple. It's quite the group, but we have high expectations for their video especially since Nicole thinks she's so funny.