What Clarice Wore at her Wedding . . .

Of course, the young woman in the portrait is not Clarice, but it is likely the fabric shown on the sleeve of Pollaiolo's "Portrait of a Lady" (c. 1475, currently in the Uffizi) was similar to the fabric used for Clarice's gown.

From a letter written by Piero di Marco Parenti  to (most likely) Filippo di Mateo Strozzi , published in Lives of the early Medici as told in their correspondence:

“On Tuesday the bride left (a tournament was held first), and returned to the house of the Alessandri in the same dress in which she came to be married.  This was a robe of white and gold brocade and a magnificent hood on her head, as is used here.  She rode the same horse and was accompanied b the same youths, whose rich dresses of silver brocade embroidered with large pearls and jewels baffle description.  From what they tell of courts of great princes nothing was ever seen like it save certain jewels of great value worn by some great Lords.  Of the women I say nothing!  Such jackets and robes of silk, all of them embroidered with pearls."