I found 'MENS GOTHIC MILITARY STEAMPUNK LONG LEATHER COAT XS-4XL' on Wish, check it out!
Evening dress, by Jean-Philippe Worth, 1907-10, at the Met. See: http://www.metmuseum.org/collection/the-collection-online/search/156038?img=0&imgNo=0&tabName=gallery-label
IMPERIAL TAILCOAT - BLACK VELVET BROCADE
<3 Steampunk coat
VICTORIAN ARISTOCRAT VEST - PURPLE/BLACK TAPESTRY
Dr Who Gallifreyan Brushed Blue Tungsten
Maybe could combine with leggings and brown boots for a diff look...
Steampunk Grim Long Coat (Black) [now that I think about it, maybe Rilo would look good in black XD)
Make necklaces from vintage buttons