Last Night's Parties: Seth Rogan & Zac Efron Premiere "Neighbors," Jessica Biel Celebrates Tiffany & Co. & More!

by Stephanie Maida · May 2, 2014

This week in L.A., Seth Rogan, Zac Efron, and Dave Franco premiered their new movie Neighbors, Rachel Zoe and Hannah Bronfman joined Jessica Biel at the Chateau Marmont to celebrate Tiffany & Co., superstars including Rihanna, Jennifer Lopez, and Pharrell all rocked out at the first ever iHeartRadio Music Awards and much more!