Martina Navratilova

Retired World #1 Tennis Player, International Tennis Hall of Famer, Gay Rights Activist & Author

Laila Ali

Undefeated Four-Time World Champion Boxer & Lifestyle Expert; Heart Disease Awareness Advocate

Rachael Ray

Chef, Cookbook Author & Television Host Known for the "Rachael Ray Show"

Anne Wojcicki

Co-Founder & CEO of 23andMe

Amy Schumer

Award-Winning Actress & Comedian; Author of "The Girl with the Lower Back Tattoo;" Feminist Advocate

Amy Schumer diagnosed with rare health disorder: ‘Something was wrong’

Brittany Snow

Actress, Producer, Director, Singer & Co-Founder of Love Is Louder

Olivia Holt

Actress & Singer

Elizabeth Banks

Actress Best Known for "The Hunger Games" Series and "Pitch Perfect"

Susan Sarandon

Academy-Winning Actress & Activist

Greg Gutfeld

Political Satirist Known for "The Greg Gutfeld Show" & "The Five."

Lily Tomlin

Actress & Comedian; Star of Netflix's "Grace and Frankie"

Nina Dobrev

Canadian Actress & Model; Best Known for "The Vampire Diaries" and "Degrassi"

Aly Raisman

Olympic Gymnast, Gold Medalist, Captain of the "Fierce Five" & the "Final Five"

Rachel Botsman

Trust Expert, Lecturer at Oxford University & Author of "Who Can You Trust?"

Ken Dychtwald

Founder & CEO of Age Wave; Gerontologist & Expert on Aging-Related Issues

Peter Senge

Senior Lecturer in Leadership and Sustainability at the MIT Sloan School of Management, Pioneer in the Field of Learning Organizations, and Author of The Fifth Discipline

Phylicia Rashad

Actress, Dean of Fine Arts at Howard University, Advocate for Children, Women's Issues & Fine Arts

Maureen McCormick

Actress & Author Best Known for "The Brady Bunch"

Nastia Liukin

Olympic Gold Medal Gymnast

Jenna Bush-Hager

Best-selling Author; Contributing Correspondent, NBC's Today; Chair, UNICEF's Next Generation and Editor-at-Large, Southern Living Magazine

Superpower Sisterhood with Jenna Bush Hager and Barbara Pierce ...