It operated 715 stores across Australia under the brands Millers, Rockmans, Noni B, Rivers, Katies, Autograph, Crossroads, W. Lane and Beme,[1] most of which got from acquitions namely of the portfolio of City Chic Collective.

[14] In August 2016, the company purchased Pretty Girl Fashion Group from Consolidated Press Holdings for at least $75 million in cash and shares.

[16] In November 2019, Noni B purchased a 50.1 per cent stake in New Zealand multi-channel retailer EziBuy from Alceon Group in a $1 peppercorn sale.

[20] The company announced a $32 million capital raise in September 2021 to help it stay afloat until pandemic restrictions eased.

[21] In May 2021, the company was fined $630,000 by the Australian Competition and Consumer Commission (ACCC) for making false or misleading claims pertaining to hand sanitiser and face mask products.

[29] The following month, the ACCC brought proceedings against the company for allegedly making false or misleading representations to consumers about delivery timeframes and their rights regarding refunds for faulty products.

[32] In late October 2024, Mosaic Brands was placed into voluntary administration, [3] after failing to convince all stakeholders of the restructure, principally the senior lender, and citing reduced spending, structural complexity and massive debts to suppliers.

The company has started focusing on the timely holiday period and slashed prices while preparing for a creditors' meeting.

[33] A sale process is underway, with a dozen interested parties and hints at breakups and resumed store closures, staving a complete receivership and shutdown.

The receivership has also left Bangladeshi suppliers out of pocket and owing unpaid wages (but were crammed down in previous arrangements),[3] and brought shame on the industry from Oxfam and Bangladesh Garment Manufacturers and Exporters Association with accusations of exploitation and inadvertent free labour, and fears of seamstresses going hungry.

[34][35] Administrators have tried to assure creditors that entitlements shall be paid in full, despite the receivership (which usually prioritises the appointee) and heavy debt.

[37] On 10 December, receivers announced that the entire Katies brand and an additional combined 80 Millers, Rivers and Noni B stores would be closed down by mid-January 2025, affecting 480 employees.

All remaining 252 stores across both brands will also permanently close by mid-April alongside Rivers, and will result in the loss of another 933 employees, after the search for a buyer failed.