Briefs by Wolf Whistle, You can never have too many, High rise, Just like your standards, Brief cut, Exclusive to ASOS. Founded in 2012, London-based label Wolf Whistle specialises in sleep sets, lingerie and cup-sized swimwear. With some styles designed exclusively for ASOS, the brand's made-you look bikinis help you prep for the poolside, while its sleepwear, bras and briefs are finished with luxe satin fabrics and delicate lace trims.