Abstract: The present disclosure is directed to open hair curlers that may be used with separate hair rollers to create two or more sizes or orientations of curls on the same length of hair. The hair curling systems include a planar body curved around a lateral axis without forming a closed cylinder. The planar body curves to create a cradle in which a complementary hair roller can sit inside. Other examples include an open curler without a distinct cradle that can still accommodate a separate hair roller. When hair is secured around a complementarily configured hair roller which is then secured in the open hair curler, the remaining hair may be curled around the outside of the open hair curler.