Carrie Underwood rang in her 33rd birthday [2] this week, and celebrated by making the promotional rounds for her upcoming world tour, which kicks off in Glasgow on Friday. Before jetting off to the UK, Carrie stopped by a Nashville radio station on Wednesday and belted out a cover of the Whitney Houston classic "I Will Always Love You." Carrie's version of the ballad sounds a lot more like the original — which was penned and performed by Dolly Parton — but is powerful nonetheless. Watch her cover above now, then check out Beyoncé's recent version of the same song [3].