“Lady Ermine” (often referred to as Lady with an Ermine) is an exquisite portrayal of Cecilia Gallerani, painted by Leonardo da Vinci. The lifelike depiction of both the subject and the ermine is a masterclass in Renaissance painting techniques, highlighting da Vinci’s command of light, shadow, and human expression. The subtle details—such as her poised gaze and the gentle handling of the ermine—underscore the artist’s fascination with nuanced emotion.