David Chang

Founder & Chef of Momofuku Restaurant Group

Kylie Jenner

Founder & Owner of Kylie Cosmetics, Television Personality, Brand Ambassador, Fashionista & "It" Girl

Jessica Simpson

International Music Superstar, Bestselling Author & Entrepreneur

Khloe Kardashian

Reality TV Personality, Entrepreneur, Author & Founding Partner of "Good American"

Bassem Youssef

Egyptian Comedian, Host of the "The Program" & Cardiac Surgeon

Hayden Panettiere

Actress Known for "Nashville" & "Heroes" & Animal Rights Activist

Kendall Jenner

Model, Reality TV Star, Fashion Contributor

Hailee Steinfeld

Actress and Singer; Known for "Ender's Game," "True Grit" and "Pitch Perfect 2"

Jeanette Jenkins

Founder & President of The Hollywood Trainer Fitness Company

Katherine Schwarzenegger Pratt

Best-Selling Author & Philanthropist

Tia Mowry

Actress & Celebrity Mom; Star of "Tia Mowry at Home" on the Cooking Channel

Michelle Phan

Make-Up Artist, Entrepreneur, YouTube Personality; Founder of ipsy and EM Cosmetics

Tegan & Sara

Canadian Pop Duo

Emily Ratajkowski

Actress, Activist, Author & Model

Rihanna

Grammy Award-Winning Singer, Songwriter & Actress; Creator of Savage X Fenty

Kenny Smith

Two-Time NBA World Champion & NBA Analyst, "Inside the NBA"

Talk of Champions: Stories of the People Who Made Me: A Memoir

Jamie Chung

Actress and Blogger

Peter Gallagher

Multi-Award Winning Film, Television and Theater Actor; Known for His Roles on "The OC" and Broadway Play "On the Twentieth Century"

Gwen Stefani

Three-Time Grammy Award Winner, Singer-Songwriter, Coach on "The Voice," Fashion Designer & Entrepreneur

Val Kilmer

Actor Known for his Roles in "Batman Forever" and "Top Gun," Among Others