What is the thing that queens put under their dresses to look big?

Queens often used a type of undergarment called a petticoat to create volume and shape beneath their dresses. These petticoats were typically made of layers of fabric and sometimes included a hoop or crinoline to enhance the dress's silhouette, giving it a fuller appearance. This practice was especially common in historical fashion, where elaborate gowns were a symbol of status and elegance.