Portrait of a Young Girl is a small oil painting on oak panel completed between 1465 and 1470 by Petrus Christus. Unlike in prior Early Netherlandish paintings, the sitter is placed in an airy, three-dimensional, realistic setting. This portrait, described by art historian Joel Upton as "a polished pearl, almost opalescent, lying on a cushion of black velvet", was influential in the decades after its completion.Painting: Petrus Christus