October 21st 2015 - American Horror Story: Hotel episode 3
Later in the episode The Countess confides to Tristan that she is going to seduce Will Drake into marrying her to get his money.
For her initial seduction, that gave us the great line "by the way, you're hard", Lady Gaga wore another archival couture piece. This time the piece comes from Stephane Rolland's Autumn/Winter 2011-2012 collection (look 14).
Because it is an archival piece, it is no longer available to purchase.