Dancing with the Stars closed out week 7 with a farewell to Willow Shields.

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The actress performed her last routine with Mark Ballas during season 20's "Era Night." As the series' did the Charleston down memory lane, the highest performing couple was awarded immunity for the week while the remaining six sets of contestants participated in a dance-off to score extra points.

Willow and Mark managed to gain two points in addition to the 37 they received for their futuristic jazz routine, but their fate was already set courtesy of their week 6 performance. By no means the lowest scoring team, Willow and Mark were eliminated nonetheless.

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Meanwhile, Nastia Liukin and Derek Hough rose to the top once more. Season 20 has yet to see the judges award a perfect 40 to any routine, but Natia and Sasha's Charleston brought them close with the highest score of the evening, a 38.

On the opposite end of the spectrum, Robert Herjavec and Kym Johnson came in last place with a 31, a score that was tied by Chris Soules and Witney Carson.

Click the video below to see the evening's best performance.

Find out who will be eliminated next when Dancing With the Stars airs Mondays at 8 p.m. ET on ABC.

Tags: Dancing with the Stars television Reality TV ABC