Mme.

plural Mmes.

1. alternativeAlternative form of Mme.

   […] the second, separated from the first by an obscure ante-chamber, was occupied by Mmes. Elizabeth and Royale.

   1893, Alexander Dumas, Andree de Taverney or, The Downfall of French Monarchy, New York, N.Y.: The F. M. Lupton Publishing Company, →OCLC, page 284

   2 more examples

   Mme. Loubet, accompanied by Mmes. Dubois and Combarieu, was amongst the early arrivals, Colonel Nicholas in attendance.

   1910, H[enry] E[dward] Noyes, Seventeen Years in Paris: A Chaplain’s Story, London: Baines and Scarsbrook, […], page 60

   Once Belgian Jack and Charlie were gone, Mme. DuBois went back into her compartment, sat down on her bed and began to cry softly.

   2002, Larry Millett, The Disappearance of Sherlock Holmes: A Mystery Featuring Shadwell Rafferty, Viking, →ISBN, page 220