I recently wrote about the power of word of mouth, and how men trust authority while women trust common experience.
Whether you're marketing to women or to men, having someone else speak on your behalf can be incredibly powerful.
Singing your own praises can come across as arrogant or egotistical. Women are especially sensitive to not appearing like they are "bragging." So getting someone else to "do the bragging" is a smart solution.
What's the best time for someone else to build you up? During your introduction.