HBC sees Burstell engaged in bringing innovative concepts to all of its divisions.
A product and marketing executive at Yves Saint Laurent, he will take over Isabelle Guichot's role.
The company had previously said it hadn’t found evidence of stolen data.
The Theallet collection will hit the nation’s biggest women’s specialty retailer for sizes 14 to 28 in the fall.
The four styles will be available exclusively on the publication’s e-commerce venture, shopbazaar.com.
The designers made a personal appearance at Bloomingdale’s Century City in Los Angeles in support of their latest line.