Images courtesy of Lookbook
According to Wikipedia lace is: 'an openwork fabric patterned with open holes in the work, made by machine or by hand. The holes can be formed via removal of threads or cloth from a previously woven fabric, but more often open spaces are created as part of the lace fabric. A true lace is created when a thread is looped, twisted or braided to other threads independently from a backing fabric.
Originally linen, silk, gold or silver threads were used. Now lace is often made with cotton thread. A few modern artists make lace with a fine copper or silver wire instead of thread.'
We say lace is 'hot'. Simple as that.