Age when women are the most catty?

In your experience, what age would you say that women become the most bitchy, competitive, or catty?

Obviously each age has it's version:
For example, during the teen years, there is
drama over not getting invited to places, and friends falling out, etc.
But overall, in my experience, I've noticed to be more-so the mature women, who usually target the younger women.

What do you think?
Teens
Younger Women: 20's/Early 30's
Mature Women: 35+
Select gender and age to cast your vote:
Age when women are the most catty?
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