Gwen Stefani made quite the impression last night during her debut on the hit NBC show, The Voice. Along with other new coach Pharrell, the platinum songstress was able to add her bubbly personality and her expertise into the red arm chair mix.

Even veteran coach Adam Levine seems a little worried about his new coaching competition, saying, "Gwen and Pharrell are quick learners - Blake and I are gonna have to work a lot harder." Maroon 5 frontman Levine admitted after getting outsmarted once again.

The Maroon 5 frontman said even the crowd seemed to prefer the fresh blood. Adam complained, "There were so many loud 'Gwens' ... At least make it, like, even." Let's be honest -- we'd take Gwen and Pharrell over Adam and Blake any day!

It turns out that Adam and Blake may have more than they bargained for with the new judges -- who just so happen to be long time friends and collaborators. The duo wrote No Doubt’s hit "Hella Good" back in the day -- and may be stiff competition for the other two judges.

"Gwen and Pharrell collaborated many times together and I feel like I’m competing against Adam and a duo," Blake admitted.

For the show, Gwen donned a black blazer with white piping, knee-high shorts and white stockings. At one point, the No Doubt frontwoman took to the stage and belted out parts of "Just A Girl" to show the singing hopefuls some "stage presence."

Earlier in the day, Gwen showed off her toned tummy in mesh shirt at acupuncture -- and of course looked picture perfect. The woman really can do no wrong!