Retailer Mosaic Brands wants to grab a bigger share of consumers' wallets by adding beauty products and accessories to clothing stores and creating an online department store, but faces short term profit pressure from the bushfires and COVID-19.

The owner of brands including Noni B, Rivers, Katies, Millers and BeMe postponed its interim dividend and backed away from full-year profit guidance after warning the bushfires were likely to dent sales in the June-half and the coronavirus could ruin one of its biggest trading periods - Mothers Day - if new stock was delayed. The shares plunged 21 per cent to $1.42.