Arguably the most sought-after trainer among celebrities, Harley has worked with some of the top names in Hollywood, including:

• Alicia Keys
• Eva Mendes
• Jessica Simpson
• Kanye West
• Kate Beckinsale
• Orlando Bloom
• Mandy Moore
• Nia Long
• Jane Fonda
• John Mayer
• Vanessa Williams
• Katherine Heigl
• Eve
• Michael Chiklis
• Rachel Weisz
• Sophia Bush
• Halle Berry
• Zach Braff
• Val Kilmer
• Robert Downey Jr.
• Ben Foster
• Jim Caviezel
• Benjamin Bratt
• Stephen Dorff
• Common
• Eliza Dushku
• Rick Fox
• Sanaa Lathan
• Donald Faison
• Tracee Ellis Ross
• Minka Kelly
• Jeff Goldblum
• Enrique Murciano
• Brendan Fraser
• Claire Forlani
• LL Cool J
• Juliette Lewis
• Milla Jovovich
• Ray Liotta
• Kenna
• Gabriel Macht
• Jordana Brewster
• Miley Cyrus
• Jason Segel
• Adam Brody
• Angela Bassett
• Teresa Palmer
• Jimmy Fallon
• Paul Rudd
• Kimora Lee Simmons
• Ellen Page
• Jonah Hill
• Amanda Bynes
• Dido
• Natalie Portman
• Seth Rogen
• Kid Sister
• Hilary Duff
• John Rzeznik
• Amanda Seyfried