Bikini briefs by Playful Promises, Sequin front panel, Smooth back panel, Brief-cut, Hand wash, 86% Polyester, 14% Elastane. 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.