Nicole Kidman, Penelope Cruz attend Nine premiere
Taking place in Leicester Square, Daniel Day-Lewis, Dame Judi Dench and Kate Hudson were also at the premiere.
Although Sophia Loren also stars in the film, she was not at the event.
The film tells the story of famous film director Guido Contini, who struggles to find harmony in his professional and personal lives.
Speaking about having to sing and dance for the film, Day-Lewis, who plays Contini, said: "We started in the same place, one of abject humility and dread."
He added that director Rob Marshall created an atmosphere "so joyful and vibrant", which "kids you into believing that" you have to sing and dance.
The film goes on general release on December 18th.