Fashion Jennifer Lopez wears Thierry Mugler Fall 2015 Navy Embellished Dress and Casadei Heels to American Idol’s Philadelphia Auditions Posted by Posted on Aug 16, 2015 showMessage = false, 2000)" > Copied to clipboard! American Idol fashion is back! J. Lo shut down the Philadelphia auditions for the popular show in a Thierry Mugler Fall 2015 dress and Casade Pumps. Yasss! Her dress was look 1 in Mugler’s Fall 2015 show. Hot! I can’t wait to see her style this season! Slay after Slay, all day. What do you think?