It was bring your kids to work day for John Legend! The 43-year-old singer brought his 6-year-old daughter Luna and 4-year-old son Miles to the set of "The Voice," posting a pic of the moment to his Instagram on Monday. "My biggest fans (until they're too cool to think I'm cool) came to @nbcthevoice! They're definitely voting for #TeamLegend," he captioned the post. The "All Of Me" singer also took to his Instagram Story to let Luna and Miles share their excitement about being at work with dad.