The singer and "The Voice" judge debuted a red, flowy 'do Monday night, looking nearly unrecognizable and absolutely gorgeous.
The look, complete with a bold red lip and sultry eye makeup to go with it, totally channeled Jessica Rabbit:
But we have to admit we're getting some serious "The Little Mermaid" vibes, too:
Still, this new look -- with its old Hollywood glamour and vibrant, bold color -- might just be our favorite yet.
Get it, X-Tina!