Ryan Seacrest

Self - Host

Giuliana Rancic

Self - Host

Jay Manuel

Self - Fashion Expert

Debbie Matenopoulos

Self - Correspondent

Kristin Dos Santos

Self

Catt Sadler

Self - Host

Kelly Osbourne

Self - Fashion Police

Jason Kennedy

Self - Post-Show Host

Ross Mathews

Self - Host

Jacob Tremblay

Self

Dave Karger

Self - Film Expert

Kristina Guerrero

Self - Correspondent

Kristen Bell

Self

George Kotsiopoulos

Self - Fashion Police

Ali Fedotowsky

Self - Correspondent

Nelly Furtado

Self

Jennifer Hudson

Self

Scarlett Johansson

Self

Samantha Harris

Self - Post-Show Host

B.J. Novak

Self

Bobbie Thomas

Self - Style Expert

Cate Blanchett

Self

Fergie

Ben Lyons

Self - Movie Expert

Kristin Cavallari

Self - Fashion

Jeff Kim

Self - Fashion

Wolfgang Puck

Self

Ellen DeGeneres

Self

Viola Davis

Self

Julius Tennon

Self

Portia de Rossi

Self

Kristin Chenoweth

Self

Dana Brunetti

Self

Barkhad Abdi

Self

Dax Shepard

Self

Terrence J

Self - Host

Will Marfuggi

Self - Correspondent

Ed Sheeran

Self

John Legend

Self

Chrissy Teigen

Self

Kacey Musgraves

Self

Dan Reynolds

Self

Ellen K

Self - Guest

Cedric the Entertainer

Self

Imogen Heap

Self

Terrence Howard

Self

John Lithgow

Self

Chuck Maldonado

Step Choreographer

Jennifer Love Hewitt

Self

Andrew Aguilar

Self

Tyra Banks

Self

Tina Fey

Self

Heidi Klum

Self

Kyra Sedgwick

Self

Sal Masakela

Self - Host

Michael Yo

Self - Music Expert

Marc Malkin

Self - Gossip Guru

Fantasia Barrino

Self

Natasha Bedingfield

Self

Tia Carrere

Self

Miley Cyrus

Self

Chris Daughtry

Self

Fawn

Self

Josh Groban

Self

Carson Kressley

Self - Fashion Expert

Kimora Lee Simmons

Self - Fashion Expert

Selema Masekela

Self - Post-Show Host

Giovanni Jackson

Self

Masi Oka

Self

Adrian Pasdar

Self

Leonard Roberts

Self

Tom McNamara

Self

Marc Anthony

Self

Drew Barrymore

Self

Jessica Biel

Self

Emily Blunt

Self

Zach Braff

Self

Abigail Breslin

Self

Nancy Carell

Self

Steve Carell

Self

Dane Cook

Self

Zooey Deschanel

Self

Hayden Panettiere

Self

Kevin Spacey

Self

Sarah Hyland

Self

Kevin Nealon

Self

Jenna Fischer

Self

Allen Lee Haff

Self

Linda Koopersmith

Self

John Krasinski

Self

Helen Mirren

Herself

Ashlyn Walker

Self

Forest Whitaker

Self

Christina Applegate

Self

Javier Bardem

Self

Kate Beckinsale

Self

Nikki Blonsky

Self

Emmanuelle Chriqui

Self

Rhys Coiro

Self

Travis Barker

Self

Kevin Connolly

Self

Ken Baker

Self

Landon Barker

Self

Dave Cote

Self

Sylvester Stallone

Self - After Party Guest

Jerry Ferrara

Self

Scott Barnes

Self - Celebrity Makeup Artist