Conversation so far:
How did Spice Girls contribute to commercialization?
At the height of "Spice mania", the group were involved in a prolific marketing phenomenon.
Did they make a lot of money?
CANNOTANSWER.
What was the celebrity culture like?
The mainstream media embraced the Spice Girls at the peak of their success.
Did they win any awards?
"Best Pop Act" and "Best Group.
What else was interesting about them during this time?
In late 1998, Brown and Adams announced they were both pregnant.

Question: When did they have their children?
Self-contained rewrite: When did members of Spice Girls have their children?