JOINT FILING AGREEMENT

EXHIBIT 99.1

JOINT FILING AGREEMENT

The undersigned hereby agree that the Statement on Schedule 13G filed herewith (and any amendments thereto), relating to the Common Stock of Blue Nile Inc., a Delaware corporation, is being filed jointly with the Securities and Exchange Commission pursuant to Rule 13d-1(c) under the Securities Exchange Act of 1934, as amended, on behalf of each of the undersigned.

This Agreement may be executed in counterparts and each of such counterparts taken together shall constitute one and the same instrument.

Dated this 15^th day of May, 2012.

CITADEL ADVISORS LLC			CITADEL HOLDINGS II LP
By:	Citadel Holdings II LP,		By:	Citadel Investment Group II, L.L.C.,
	its Managing Member			its General Partner
By:	Citadel Investment Group II, L.L.C.,		By:	/s/ Xxxx X. Xxxxx
	its General Partner			Xxxx X. Xxxxx, Authorized Signatory
By:	/s/ Xxxx X. Xxxxx
	Xxxx X. Xxxxx, Authorized Signatory
CITADEL INVESTMENT GROUP II, L.L.C.			XXXXXXX XXXXXXX
By:	/s/ Xxxx X. Xxxxx		By:	/s/ Xxxx X. Xxxxx
	Xxxx X. Xxxxx, Authorized Signatory			Xxxx X. Xxxxx, attorney-in-fact*

* Xxxx X. Xxxxx is signing on behalf of Xxxxxxx Xxxxxxx as attorney-in-fact pursuant to a power of attorney previously filed with the Securities and Exchange Commission on February 24, 2006, and hereby incorporated by reference herein. The power of attorney was filed as an attachment to a filing by Citadel Limited Partnership on Schedule 13G for Morgans Hotel Group Co.