Czar Nicholas stands to the left in this 1896 photograph. What's the name of that unusual jacket he's wearing?

by Indica

http://media-cache-ak0.pinimg.com/736x/5c/37/36/5c3736008f26e2e8965ad8d71f195cd5.jpg

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According to a discussion from another time this was posted, it's from the Irish Guard:

http://www.reddit.com/r/HistoryPorn/comments/1a59ko/tsar_nicholas_ii_in_balmoral_castle_1896_with/c8u70s7