Daring Jennifer Lopez Sparkles in a Semi-Sheer Gown as She Performs With Co-judges at American Idol Finale

There's little doubt Jennifer Lopez knows how to put on a show. And for the American Idol finale, Jennifer Lopez dazzled the crowd with a cover of Rihanna's Diamonds and a barely-there glitter gown. The 45-year-old's garment flirted with the imagination as she performed the pop track with co-judges Keith Urban, 47, and Henry Connick Jr., 47, on Wednesday. While her co-stars appeared to coordinate with their matching black attire, Jennifer upped the glam factor with her sparkling dress and large hoop earrings. Her hair fell down in a straight and glossy 'do, and her radiant face glowed with heaps of smoky eye shadow.