She joked on the red carpet at Sunday’s Grammy Awards about what her children think of her relationship with Williams, reports people.com.
“They were such a huge fan and I was like, ‘Actually, I know Pharrell. I started showing them pictures on the internet and they were like, ‘Wait a minute, is he your boyfriend?’ I’m like, ‘No.'” said Stefani.
But Zuma, 6, and Kingston, 8, aren’t the only ones in awe of The Voice judges’ relationship.
The music producer’s 6-year-old son Rocket has been spending his time catching up on Stefani’s classic tracks.
"It’s interesting because now Pharrell’s little boy has discovered my music and it’s flipped," she said.