Were champagne glasses modeled on the breasts of Madame de Pompadour?

Dear Cecil: An old friend of mine feels you are the one person who can provide a definitive answer concerning the origin of the popular saucer-shaped champagne glass. His father has always maintained that the original saucers were modeled on the breasts of Diane de Poitiers (1499-1566), the mistress of Henry II. She commissioned the glassblower at their Chateau d’Anet to make them as a present to Henry, who was particularly enamored of her breasts and harbored a fantasy to drink wine from them. (Champagne had not yet been invented.) Imagine my friend’s consternation during a recent tour of the Moet & Chandon establishment in Rheims when the Moet staff recounted a close facsimile of this story only changing the cast of characters to read Madame de Pompadour (1721-1764), Louis XV, and, naturally, champagne. Cecil, whose knockers are being commemorated? John D., Washington

Helen appeared with her attendants, looking as radiant as Phoebe among the stars … The veil which covered her bosom was lifted and one of the two globes was revealed, pink as the dawn, white as the snows of Mount Rhodopus, smooth as the goat’s milk of Arcadia … With wax provided by the golden daughters of Hymettus, the shepherd Paris … took the cast of the breast, which looked like a luscious fruit on the point of falling into a gardener’s hand. When Paris had removed the wax cast, the attendants hastened to replace the veil over Helen’s gorgeous breast, but not before her admirers had glimpsed a teat whose freshness was as tempting as a strawberry.