Halsey In Julien Macdonald Performing @ 2018 amfAR New York Gala

Halsey was in attendance and performed at the 2018 amfAR Gala New York on Wednesday (February 7)

After her appearance on the redcarpet  she changed into a one-sleeve embellished sheer Julien Macdonald Spring 2018  gown  for her performance .