After suffering weak sales for nearly two years following the end of its phenomenal "fleece jacket boom," casual clothing chain Uniqlo is again enjoying strong sales.

Since December, the chain has seen double-digit growth in same-store monthly sales, with February posting an 18.4 percent increase from a year earlier.

Reflecting its recent performance, the share price of Uniqlo operator Fast Retailing Co. is up 2.8-fold from a year ago; its share price closed at 7,460 yen on Tuesday.