The annual rate of deflation in clothing and footwear in August was 2%, marking the 20th consecutive deflationary month since the start of the British Retail Consortium Shop Price Index.
The rate of deflation in the clothing and footwear sector slowed against July which saw a 2.7% fall.
The British Retail Consortium said that the rate of deflation had fallen from 3.1% in the past year, to 2.5% over the past six months and 2.3% in the last three months.
However the BRC added that prices were still lower than this time last year because retailers were boosting sales through promotional activities.
Fashion and electricals were the only retail sub-sectors to remain in deflationary territory in August.