Kelly Clarkson stole the show on the 'Dancing With the Stars' finale when she performed a medley of 'Dark Side' and her biggest selling single to date, 'Stronger.'Clad in a sparkly dress with matching glittery smoky eyes and pin straight hair, Clarkson first broke into 'Dark Side.' After the first verse and chorus, the 'American Idol' champ launched into her woman scorned anthem 'Stronger.' The stage was flanked by dancers, but Clarkson's powerhouse pipes and newly svelte figure kept the spotlight on her, even when everyone around was shaking what their mommas gave them.

Clarkson stopped to chat briefly after her performance. "Oh my God, it was so good!" she gushed about the dancers on 'DWTS.'

Clarkson is making a name for herself quickly at ABC, where she will be a coach on the new show 'Duets.' The first five episodes of ‘Duets’ have been pre-taped; the rest of the competition will go live on starting June 28 for the last four episodes. Clarkson’s fellow coaches are Jennifer Nettles, Robin Thicke and John Legend. The teams will compete for their singers to receive a record deal from Hollywood Records. She's also readying for the release of her 'Dark Side' video.

Watch Kelly Clarkson Perform 'Dark Side' on 'Dancing With the Stars'