Pregnant Carrie Underwood Is A Vision In White At The American Country Countdown Awards

Gorgeous mama to be! Carrie Underwood attended the 2014 American Country Countdown Awards at Music City Center in Nashville, Tennessee on Monday night. The pregnant star wore a tight, floor-length white Ashdon gown with gold detailing, her golden tresses swept to one side.

Underwood, 31, is expecting her first child -- a boy -- with husband Mike Fisher.

As hosts Florida Georgia Line wrote in The Huffington Post, "American Country Countdown is the longest running radio countdown show of all," and Monday night marked its first ever televised event.

After stunning on the red carpet, the "American Idol" alumna slipped into a belted, ruffled blue Leanne Marshall dress and performed a medley of hits. As the opening act, Underwood sang "Before He Cheats" before moving on to "American Girl," "Cowboy Casanova," "Blown Away" and "Something in the Water," according to E! News.

Jason Aldean, Luke Bryan, Kelly Clarkson and Miranda Lambert all were scheduled to perform as well.