She's had many killer looks in the past few months (from a hot pink onesie to a boho chic baby doll dress), but this one takes the cake. For the season finale of American Idol on Wednesday, judge Jennifer Lopez sizzled in a shimmering long-sleeved mini by designer Kaufmanfranco that was accented by tousled, va-va-voom hair and glowing makeup. The result? A spectacular fashion moment that, quite frankly, is inspiring us to hit the gym (have you seen those legs?). "Tonight was the finale so we…
