Kelly Clarkson's Cover of 'Edge of Seventeen' Will Blow You Away

On the April 22nd episode of The Kelly Clarkson Show (airing weekdays on NBC), Clarkson delivered another signature Kellyoke performance. 

This time, she covered Stevie Nicks' iconic 1982 hit "Edge of Seventeen." And let's just say we'll be playing it on repeat. This was no ordinary Kellyoke, though: It was a small part of the talk show Host's hour-long birthday celebration.

Clarkson turns 40 years old on Sunday, April 24. In honor of her big day, the entire April 22nd show was filled with surprises for her. Sneak-peek clips posted to TKCS's YouTube account show the cast of Clarkson's favorite series, The Rookie, popping in to offer their well-wishes. Actor Michael Ealy also surprised her with a cake and sang "Happy Birthday."

Aside from her on-screen celebration, Clarkson has fun birthday plans. She revealed to Access Hollywood that she's keeping the celebrations low-key, especially considering she'll be hosting the live Semi-Finals episode of American Song Contest on Monday, April 25.

"There's so much pressure put on it because it's my big 4-0," she said. "So I'm doing, like, a chill dinner just because I only have [Sunday] night off—my birthday—and then going hiking with some friends. And then I'm really celebrating my summer. This is my first summer I've taken off since I was 16 years old, 'cause musicians always tour and they're always working during the summer...I'm gonna be just at my ranch just chilling, and I'm celebrating 40 all summer long. I'm celebrating myself."

That sounds like a perfect birthday to us. Be sure to watch American Song Contest Mondays at 8 p.m. ET on NBC.