Womenswear retailer City Chic Collective is aiming to grow its share of the $1 billion plus-size market by widening its online range and doubling the size of stores to carry products only available online.

City Chic plans to move into new lifestyle categories and increase the size of about 20 stores from about 110 square metres to more than 200 square metres to make room for evening dresses, active wear, sleepwear and shoes.