The 47-year-old singer couldn't help but gush about the 40-year-old country star on Tuesday's episode of "Late Night with Seth Meyers" while discussing "The Voice" Season 12.
"It's so unbelievable," Stefani said of serving as a coach with Shelton on the NBC reality competition.
"I love Blake. He is the most incredible guy. Everybody loves Blake -- there's no way around it. He's just a sparkly, happy, amazing person."
"I didn't even know that Blake Shelton existed in the world [before we met on 'The Voice']," she admitted. "It's interesting because, weirdly, my mom and my sister-in-law used to watch the show before me, so they did [know who he was]."
"Just being on the show is so magical," the star added.
"You're surrounded by music the entire time -- whether it's, like, picking songs for your team or listening to really talented people sing. It's just such an incredibly inspiring show, and it opened me up to new music, not just country."
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