Musician Gwen Stefani has donated $1 million to Save the Children’s relief effort in Japan, proving that she’s not just another pretty face — she’s also a humanitarian.

Stefani will join the growing number of celebrities  around the  world  are doing  what they can to  help those in need  after the earthquake and tsunami wiped out by all the towns and villages in northern Japan early this month. These celebs are Sandra Bullock (who donated  $ 1,000,000  to the Red  Cross), Lady Gaga, and even Charlie Sheen. In addition to her generous donations, Stefani is also the shirt that her band,…