I wish her well as I do all the pregnant mothers I never heard of. >p>But still, why her?
She was the lead singer of No Doubt, a multi-platinum-selling ska-punk band, and she later had a multi-platinum solo career. No Doubt is now back together and has a new album coming out next year.
The reason I find her so extraordinary is, unlike most of your other female pop-stars, she never gets in trouble, never had drug problems, never got arrested, and his happily married to the father of her children (in addition to being gorgeous and very talented).
Here are a few of their better songs:
http://www.youtube.com/watch?v=P_8WWWiHZNc
http://www.youtube.com/watch?v=-ITvE3tSIOA
http://www.youtube.com/watch?v=IihXd0bed-k