Carrie Underwood has been, well, busy since winning Season 4 of American Idol in 2005. Since the confetti fell, the country singer has released nine albums and embarked on seven tours. She's also tried her hand at acting and launched a handful of businesses.

The American Idol winner wowed the audience with her take on holiday classics including “Have Yourself a Merry Little Christmas,” The First Noel” and “O Holy Night.”

Carrie Underwood brought the holiday spirit out in full force during a recent performance at a Nashville-area church, where she sang Christmas songs such as “O Holy Night” and “Have Yourself a Merry Little Christmas.

The "nicest man in stand-up" is getting into the holiday spirit on his Christmas special, slated to air on Thursday evening. Here's what to know.

Underwood's big break came when she first auditioned for the show in 2004. America was introduced to a small-town farm girl with a big voice. She sang "I Can't Make You Love Me" by Bonnie Raitt for Simon Cowell, Paula Abdul and Randy Jackson, who were the first judges on the show.

Nate Bargatze's Christmas special will include a mix of stand-up comedy, comedy shorts, sketches and musical performances, spotlighting the spirit of Nashville.

Carrie Underwood surprised the audience when she joined Darius Rucker to perform a beloved Christmas hit on the historic Grand Ole Opry stage in Nashville, Tennessee. The performance was part of comedian Nate Bargatze ’s star-studded holiday special.

Carrie Underwood has no shortage of talent. Beyond her singing capabilities, she's got a knack for gardening, and she has even started baking her own artisanal breads and homemade pasta. Now, the "Before He Cheats" singer is back in the kitchen. This time, Underwood is making Christmas cookies.

Carrie Underwood is experiencing a truly heartwarming full-circle moment. It was just 20 years ago when the world first heard the incredible vocals of 21-year-old Carrie Underwood on the "American Idol" stage.