(Los Angeles, CA – May 25th, 2011) – Beyonce hit a high note in Zac Posen during her performance on last night’s finale of American Idol Season 10. The pop megastar took Hollywood glam to the mainstage, performing at the most-anticipated American Idol season finale to date in a grey Zac Posen jersey gown from the designer’s Fall/Winter 2010 Collection.

Beyonce in Zac Posen on the Season 10 Finale of American Idol