The Reign Boutique's denim collection features a diverse range of styles, including high-rise wide-leg jeans, cropped flares, super high-rise shorts, and slim straight jeans, among others. Brands like Dear John, Hidden, Vervet, and Just Black Denim are prominently featured, offering a variety of washes, cuts, and distressed details. The collection seems to cater to different tastes and occasions, emphasizing comfort, style, and quality.