Namie Amuro success

[Toniayu123]

Hello, I have to write my degree project this year and I'm considering analyzing Namie's success. I became a fan a little bit latter than when 60s70s80s was released when I was in high school and that inspired me to study advertising later in university. For me that single and the vidal sasson ads remains one of the best campaigns ever.
I do think Namie's career was not so good in the past but after so much effort, change in image and good advertising contracts her career went up and make her one of the most successful artist in japan.
I wanted to know more about it, what was exactly what made her career become stronger? Was the Vidal Sasson's campaign in 2008 with 60s70s80s new single really that impactful?
Any information about her career is more than welcome as well as anything regarding to music/music video role in advertising.
Thanks in advance!