Prada SpA defied a luxury industry slump last quarter as fashion fans snapped up Miu Miu’s Arcadie handbags and cashmere cardigans.

Comparable retail sales at the Italian group grew 18% in the third quarter, the Hong Kong-listed company said Wednesday. Those at its biggest label, Prada, rose 1.7%, while Miu Miu sales more than doubled during the period.

Prada has been outperforming high-end fashion rivals thanks to the success of its products among Gen Z consumers, led by the extraordinary growth rates at sister label Miu Miu, which now makes up about a quarter of group sales.