Vocal coach Gwen Stefani showcased her signature over-the-top glam while taping Monday’s “Live Top 16 Performances” episode of the NBC Singing Competition, now in its 22nd season. The 53-year-old mother-of-three gave her short natural platinum blonde hair a boost with a sixties bouffant flip. Emmy-nominated hairstylist Suzette Boozer styled Gwen’s flip while makeup artist Ernesto […]