It's true. Instagram does tell all. Stefani broke the internet when she posted a picture of her younger self celebrating the birthday of her brother, Eric Stefani. Allure speculates that the photo was taken in the early 90s, which would make Stefani in her early 20s. And her hair color? A somewhat nondescript light brown or dark blonde, depending on your perspective. It's beautiful, yes. But it's not her. 

The Stefani we know is the product of eight hours at a beauty salon in Long Beach, California. She first did it when she was 25 years old. As soon as she looked at her new, platinum blonde hair, she knew she had hit gold. "It was like I'd unlocked the key. I remember feeling like, 'I have arrived. This is me. Finally,'" she told Harpers Bazaar. Want to know the secret to her hair maintenance? A special high-lift formula (via Insider), a weekly dye (via Elle), and generous amounts of leave-in conditioner.  

It's good that Stefani knows her stuff. Her kids seem to be following in her footsteps. So far, we've caught glimpses of now 14-year-old Kingston with both bright blue hair (via US) and platinum blond locks (via Popsugar). He's sure got the looks for them!