Bridget Riley's *Frieze* is a vibrant screenprint in colours on wove paper, showcasing her mastery of Op Art through rhythmic, repeating forms that create a dynamic sense of movement and visual energy. The work exemplifies Riley's precise manipulation of colour and pattern, drawing the viewer's eye across the surface in a hypnotic, wave-like progression. Printed with full margins, the composition balances controlled geometry with an almost sensory, pulsating effect that is characteristic of her iconic practice.