Age Appropriate? Jennifer Lopez Wears Super-Short Minidress on 'American Idol' (PHOTOS)
The backless dress nonetheless showed off J-Lo's body -- not to mention her toned legs. Remind us: How is she 42 years old, again?
To complete last night's look, Lopez wore her hair in a flirty updo, and matched her sequined dress with a bair of Christian Louboutin stilettos.
Overall, it was another fashion risk for J-Lo, and a step forward from her all-metallic look on Wednesday, which received some mixed reviews from our Celebuzz readers.
What do you think of J-Lo's black minidress? Is it hotter than her look on Wednesday? Check it out in our American Idol fashions gallery, then sound off in the comments!