Miranda Lambert Nails First Live 'Vice' Performance

Becky Fluke

Miranda Lambert makes vices look good!

The 32-year-old country singer delivered a flawless live performance of her new single, "Vice," for the first time on Thursday's Jimmy Kimmel Live! Even with a full band behind her and a crowd of fans in front, you could hear a pin drop as Lambert kicked off the song with her a cappella intro -- her voice both powerful and controlled. Lambert committed fully to the song's somber tone during the four-minute performance, but couldn't help flashing that stunning, megawatt grin to the cheering audience after crooning her final note.

READ: Miranda Lambert Dishes on 'Vulnerable' New Song 'Vice' -- 'Being Honest Was Never Really a Choice' 

"Vice" is Lambert's first new single since splitting from ex-husband Blake Shelton last summer. In a candid post on Instagram celebrating the track's success on iTunes, Lambert addressed the struggles she's faced since the end of her marriage. 

"The last year of my life has been one of heartache and healing. Of learning to be honest. Accepting the flaws and celebrating the smiles," she wrote. "Finding peace in dark places. Having some moments alone with me. Facing fears and feelings. All of them. I got to know my guitars. Became friends with a pencil and paper. Used melodies to lead me places I had never been. Made music with my friends. Because music is medicine. This means the world to me. Thank you for joining me on this journey."

WATCH: Miranda Lambert Breaks Down in Tears While Performing Song Written With Ex-Husband Blake Shelton 

Onward and upward! Just a few months ago, Lambert and her new boyfriend, singer-songwriter Anderson East, made their red carpet debut together at the Academy of Country Music Awards, and backstage, Lambert gushed to ET about being "happy" at this new juncture in her life. Watch below.

WATCH: Miranda Lambert Talks New Music and Winning 7 Straight ACM Female Vocalist of the Year Awards - 'I Don't Take Any Moment of It for Granted'