Myer says its merger with a big portfolio of clothing brands owned by Solomon Lew’s Premier Investments will let it expand its lucrative loyalty program to younger shoppers and get better deals from its suppliers in the biggest shake-up of the retailer since it returned to the ASX in 2009.

The deal, announced on Tuesday, will add 719 stores to Myer and a portfolio of labels that range from those appealing to young adults in Jay Jays and Dotti to older women with Jacqui E. Those chains, known as Premier’s Apparel Brands, also include Just Jeans and Portmans.