MC Hammer

Hip Hop Recording Artist, Record Producer & Entrepreneur

Michael Phelps

Retired Professional Swimmer; Most Decorated Olympic Athlete in History

Michael Phelps shares his experience with mental health | Mic ...

Kevin Hart

Actor & Comedian

Pentatonix

Grammy Award-Winning Vocal Sensations & Winners of Season 3 of NBC’s 'The Sing-Off'

Steven Tyler

Aerosmith Lead Singer & Former 'American Idol' Judge

Ryan Seacrest

Radio Personality, TV Host & Producer Best Known for "American Idol" and "On Air with Ryan Seacrest"

Kim Kardashian

Reality TV Personality, Fashionista, Mother

Kourtney Kardashian

Reality TV Star, Mother, Healthy Living Advocate

Marcus Lemonis

Serial Entrepreneur, Investor and Leadership Expert; Chairman and CEO of Camping World; Star of CNBC 'The Profit', 'Streets of Dreams' and HGTV's 'The Renovator'; Philanthropist and Founder of The Lemon-AID Foundation

Tyra Banks

Host & Executive Producer, "Dancing With the Stars"; Model, TV Personality, Host of "America's Next Top Model"

Scotty McCreery

Country Music Singer and Winner of American Idol Season 10

Katharine McPhee

American Pop Singer, Songwriter and Actress; Known for Her Role on NBC's "Smash"

LeAnn Rimes

Grammy Award-Winning Country Singer, Actress & Author; Known for "Blue" and "How Do I Live"

Theo Von

Actor, Comedian & Podcaster Known for his "This Past Weekend" Podcast

Sarah Palin

Former Governor of Alaska; 2008 Vice Presidential Nominee

Lisa Rinna

Author, Actress & Television Personality

Josh Flagg

Author, Real Estate Broker, Philanthropist and Star of "Million Dollar Listing Los Angeles"

Phil Robertson

Founder of Duck Commander & Star of A&E's hit show "Duck Dynasty"

Alfonso Ribeiro

Host of America’s Funniest Home Videos, Actor, TV Director, Award-Winning Dancer & Broadway Star

Cesar Millan

Host of The Dog Whisperer; Author of Cesar's Way