A woman sits before a dark, undefined background, her face turned slightly toward the viewer, her gaze steady and direct. Her pale face emerges from a crisp white ruff, whose pleated edges cast delicate shadows and catch the light with a soft, almost translucent sheen. The sitter’s hair is covered by a black cap with two broad, ribbon-like extensions that fall to either side of her forehead, framing her features in stark contrast to the luminous collar.

She wears a sober black garment, its surface rendered with subtle highlights that suggest the weight and texture of the fabric, while her right hand rests gently on a red surface at the bottom edge of the composition. The fingers are painted with careful attention to their structure, the nails and knuckles visible against the cloth, and the left hand is only partially seen, emerging from a white cuff. Light falls from the upper left, illuminating the sitter’s forehead, cheeks, and the folds of her ruff, while the rest of her figure recedes into shadow, emphasizing the three-dimensionality of her presence.

The background is painted in deep, nearly featureless tones, which serve to isolate the figure and focus attention on her expression and attire. The brushwork is smooth and controlled, especially in the rendering of the skin and the sharply defined pleats of the collar, while broader, looser strokes shape the black costume and background. The composition is tightly framed, with the sitter’s head and shoulders filling much of the panel, her face positioned just off center to the right. Portrait of Aletta Adriaensdochter is painted by Rembrandt in 1639.

The museum’s record provides the sitter’s name and confirms the attribution to Rembrandt, as well as the date of execution.