As the frontwoman of the ska-pop band No Doubt, Gwen Stefani melted hearts and ears with her signature sound, but she practically blew up when she released her first solo album, 'Love. Angel. Music. Baby.,' in 2004.

The album was more poppy than No Doubt and infused with a little R&B sweetness. Rather than alienate, Stefani spawned a massive fanbase that followed her to a second album ('The Sweet Escape').

On the back of her solo fame, Stefani launched a fragrance and clothing line, transforming her from music star to mogul overnight.