Abstract: A knee pillow assembly comprises a pillow and a tether assembly. The tether assembly comprises a tether and a waistband. The tether is supported in relation to the pillow at a first end and in relation to the waistband at a second end. The waistband is structured for attachment about a person's waist. The tether is adjustable in relation to the pillow so that the pillow may be positioned in relation to the waistband and between the person's knees to reduce the risk of the knees coming into contact. In accordance with a method of the invention, a waistband is attached to a person's waist by forming a first releasable knot with the waistband. A pillow is attached to the tether in relation to the pillow by forming a second releasable knot between a free end of the tether and a loop supported in relation to the pillow.