Directors from businesses such as John Lewis, House of Fraser and Harrods will join over 200 speakers.
The department store chain has appointed Rothschild as its financial adviser.
The cover is seen as standard in the retail sector and provides suppliers with protection in case a retailer cannot pay its bills.
The former chief digital officer of Reiss will take on the new role next month.
The department store chain has written to an undisclosed number of owners to seek a substantial reduction in rent.
The idea behind the project is to utilise surplus space in its stores and provide retail start-ups with a platform to test their products.
The news follows three consecutive quarters of weak financial results at the department store chain.
The new recruit replaces Claudia Walker, who was named Buyer of the Year in the 2016 UK Lingerie Awards.
The retailer remains optimistic despite recording negative results caused by the re-platforming of its website.
The supermodel said the range focuses on creating comfortable lingerie.