Each year, Fortune recognizes 10 female entrepreneurs who are outstanding game changers, groundbreakers, and innovators. We invite them as our special guests to the Fortune Most Powerful Women Summit (this year, October 3-5 in Laguna Niguel, CA) and we share their success stories with our readers.

We’re on the hunt for female founders of thriving U.S. or international companies with revenue between $1 million and $25 million. If you’re a potential MPW Entrepreneur or you want to nominate someone, please email Elizabeth Busch at Elizabeth_Busch@fortuneconf.com by Monday, July 25. Include the entrepreneur’s name, her contact information, company website, and a brief note about why we should consider her. (We’ll contact her and ask her to apply.)

By the way, one entrepreneur who comes to the Fortune MPW Summit is Tyra Banks, whom I recently interviewed at Digitas’ digital content conference, NewFront. Who knew that the supermodel/media mogul is attending Harvard Business School…and living in a dorm as she builds her global business acumen? Here she is, talking about her life at HBS:

Since Fortune launched MPW Entrepreneurs in 2009–initially partnering with American Express –we have not discovered the next Tyra. Yet. But some of our honorees–like Dina Kaplan at Blip.tv, Susan Koger at ModCloth, Lynn Jurich at SunRun, and Michelle Marciniak and Susan Walvius at SHEEX–have beaten the odds and are seriously scaling their startups. To learn more about MPW Entrepreneurs and how to become one, visit Postcards over the coming weeks, check out our new Fortune Most Powerful Women page on Facebook–and watch this video: