Marty had invited her friend Kelly over to christen her new hot tub and the invite had gladly been accepted. It was a cool winters evening and the thought of lying in hot water proved too enticing to resist. Kelly came out of the house clad in a tiny string bikini which barely held in her 36C breasts. Marty came out a few minutes later wearing an even briefer bikini that might have been fitting for a nudist beach. Kelly had never been into girls, but she couldn't help noticing the thrust of Marty's large breasts and how they bobbed slightly as she walked on the cool tiles.
Kelly slipped into the hot water and sighed in pleasure as her whole body was enveloped by the warmth. Marty slid in opposite and Kelly felt a stir of excitement as the slender length of Marty's leg brushed against her thigh. Marty poured them both a glass of wine and as she drank it, eyed Kelly over the top of the glass. "How about we go commando," she said softly. "I've always wanted to do that."
Feeling adventurous and excited Kelly slipped off her bikini top, keeping well below the foamy surface and wriggled out of the bottoms as Marty echoed her example. Both their bathing costumes were flung to one side and they settled back against the side of the wall. Kelly wriggled in pleasure as the jet of water hit her pussy and Marty grinned, guessing the reason for her sudden movement.