Kevin Kline
Cole Porter
Ashley Judd
Linda Porter
Jonathan Pryce
Gabriel
Kevin McNally
Gerald Murphy
Sandra Nelson
Sarah Murphy
Allan Corduner
Monty Woolley
Peter Polycarpou
Louis B. Mayer
Keith Allen
Irving Berlin
James Wilby
Edward Thomas
Kevin McKidd
Bobby Reed
Caroline O'Connor
Ethel Merman
Dean Constantin
Hotel Porter
Peter Jessop
Diaghilev
Angie Hill
Ellin Berlin
Robbie Williams
Musical Performer - "It's De-Lovely"
Elvis Costello
Musical Performer - "Let's Misbehave"
Alanis Morissette
Musical Performer - "Let's Do It, Let's Fall In Love"
Sheryl Crow
Musical Performer - "Begin the Beguine"
Mick Hucknall
Musical Performer - "I Love You"
Diana Krall
Musical Performer - "Just One of Those Things"
Vivian Green
Musical Performer - "Love For Sale"
Lara Fabian
Musical Performer - "So In Love"
Natalie Cole
Musical Performer - "Ev'ry Time You Say Goodbye"
Hélène Cardona
Club Guest (voice) (uncredited)