She was a spokesmodel for La Senza lingerie In 2005, Maxim magazine placed Heming at number 86 in its "Top 100" list.
She has appeared in advertisements for Dior Bronze, Escada, Gap, Garnier, Intimissimi, John Frieda, Minelli, Oceano, Palmers, Redken, and Sonia Rykiel fragrance. She has graced the covers of French Elle, US Glamour, Town and Country, and W Magazine.
She has walked in numerous fashion shows including Herve Leger, John Galliano, Paco Rabanne, Christian Dior, Maska, Thierry Mugler, Valentino, Emanuel Ungaro, Ralph Lauren, and Victoria's Secret.
Heming is currently signed to Models 1 in London, Mikas in Stockholm, Visage Model Management in Switzerland, Diva Models in Denmark, IMG New York, Elite Model Management in Barcelona, Next Model Management in Milan, and The Fashion Model Management in Milan.
Emma is the stepmother of Rumer Willis, Scout Willis, and Tallulah Willis, Bruce Willis's daughters from his previous marriage to Demi Moore.