The pair will be joining the Voice panel in the Spring 2013 cycle to take over from the departing Aguilera and Cee Lo Green.
In an interview with Us Weekly, Aguilera offered her opinion on which aspect of The Voice will be most challenging for the new coaches.
"The blind audition process can be nerve-wracking," the 'Your Body' singer explained to the publication.
She then added more positively: "I know they'll have a blast!"
Aguilera recently hinted that she might return to The Voice once she is finished promoting her new album Lotus.
"In order to be great coaches, we have to create great music and be current artists," she commented. "I needed a break to be out there doing what I love. It only makes me fresh for when I return."
The current season of The Voice continues on Monday at 8/7c on NBC.
Watch Christina Aguilera's 'Your Body' music video below: