Hit the stalls on Via Imbriani for well-priced fashionable frocks, jumpers and cardigans, tasteful bijou jewellery, shoes, high-end fakes and the odd treasure (think vintage foulard scarves). There's a high turnover of stock to boot. Don't haggle. This is Chiaia, darling.
While not all stalls close in August, many do around mid-August for Ferragosto.