She is portrayed by Janelle Froehlich in the movie.
Yvette and her mate, Henri, are brought by the Volturi to witness the Cullens' destruction as punishment for allegedly creating an immortal child. They eventually find out that the supposed immortal child is a half-human half-vampire hybrid conceived and carried by Bella Swan when she was still human. When Aro claims that the child poses a threat to exposing their secret to mankind, Yvette and her mate seem easily persuaded, but when another hybrid, Nahuel, describes his traits and how he has managed to stay hidden in their world, Aro declares that the child poses no threat to them after all. After the situation was cleared peacefully, Yvette and her mate leave the field with the rest of the Volturi and witnesses.
Yvette is noted to have curly dark-brown hair, and to be a head shorter than her mate, Henri.
Janelle describes her character as a "French bad-girl vampire". In an interview, she describes the hardships of fighting while wearing heels, saying she had a very hard time maintaining balance during shootings.