The huge blaze began late Tuesday at Grenfell Tower in West London and was still raging on Wednesday morning.
The book will launch in September and features Arizona Muse on the cover.
The summit was hosted in association with the British Fashion Council this week.
The sale will take place at Brewer Street Car Park, former London Fashion Week venue.
She joined the company in 2013 as senior vice president of global sales.
Annual ceremony also saw Charlotte Tilbury, Gary Card scoop prizes.
Designer will sell three looks off the runway later today.