Bikini briefs by Playful Promises, Just add water, Candy stripe design, Bow-detail to back, It's all in the details, High-cut leg. London lingerie label Playful Promises, mixes flirty detailing with directional design. Corsets, bras and briefs come in luscious tulle and satin finishes as bandeau bikinis and cut-out swimsuits see retro prints and ruffle trims add to Playful Promises full collection of intimates.