Katy Perry Looks Gorgeous in Two Glam Looks for 'American Idol' Top 24 Week!

Katy Perry is looking fierce during the All-Star Duets week on American Idol!

The 36-year-old singer and Idol judge wore a white dress for night one on Sunday (April 4) and she dressed up in a black leather look for night two on Monday (April 5). You can also see photos of judges Luke Bryan and Lionel Richie, as well as host Ryan Seacrest, in the gallery.

The top 24 singers performed this week and each contestant had two opportunities to show off their talent to America. The top 16 singers will be revealed on April 11′s episode.

During night one, Katy put her legs up on the table and revealed that she stopped shaving her legs after becoming a mom.

FYI: Katy is wearing Alexander McQueen for both nights. She is wearing Bottega Veneta shoes with the white look.