Conjoined twins of one or both of the twins, particularly if they are joined at the head or share a vital organ. This makes the ethics of surgical separation, where the twins can survive if not separated, contentious. Alice Dreger of Northwestern University found the quality of life of twins who remain conjoined to be higher than is commonly supposed. Lori and George Schappell and Abby and Brittany Hensel are notable examples. The first record of separating conjoined twins took place in the Byzantine Empire in the 900s. One of the conjoined twins had already died, so surgeons attempted to separate the
Les Twins routine was a homage to Les Twins’ work. Les Twins’ dance style is often categorized as New Style hip-hop, a commercial form of hip hop with a strong emphasis on isolations and musicality. However, the twins are known for having created a unique style from this dance which they refer to as "Twins-Style". Due to their ability to anticipate and finish each other’s moves, the brothers quickly gained a reputation for their timing and skill at making freestyle dance look like choreography. Charlotte Guillemin of "WAD Magazine" wrote: Larry and Laurent credit their major inspirations as Michael Jackson, their coach