Nastia Liukin and Sasha Farber featuring Derek Hough, Jenna Johnson, Paul Karmiryan, Brittany Cherry, Henry Byalikov - Week 7 - Charleston - Eras Night.\r<br>\r<br>Krystin Burtt and Suri Serano along with Shirley and Corky Ballas who are guests this week, are discussing about the seventh week of Season 20 of Dancing .\r<br>\r<br>Nastia and Sashas interviews after their Charleston performance on week 7 of season 20. Derek could not dance due to his injury so Sasha stepped in for him .\r<br>\r<br>Derek Hough got injured, so Sasha took his place. This dance was created by Derek Hough.
