Abi rubbed her eyes as she woke up, the sun streaming through her bedroom window. She stretched and pushed the cover away from her. She then stretched again, enjoying the cooler air playing across her naked body.
She stretched luxuriously, her arms thrown out above her head, her fingers pointing. Her back was arched, her belly taut. Her large breasts were flattened to her body, her dark nipples tightening as the cool air played across them. Her firm ass pushed into the bed, her long, slender legs reaching out to the bottom of the bed.
With a contented sigh she relaxed, feeling more awake now. She glanced across at the clock beside the bed. It was still quite early, but not early enough to stop her wanting to get out of bed and start planning her day. A tingle went through her body. National Nude Day! Ever since she had read about it, Abi had wanted to join in. She wasn't sure how, but she knew she had to do something.
Abi enjoyed being naked. No, it was more than that. She loved being naked! When she was home, on her own, she loved to walk around the house naked. She was almost always naked in her own room, keeping the heat turned up in winter so that she could enjoy her freedom. At twenty, she had had a few lovers, and to Abi, being naked, and not just sex, was part of all that. She'd even spent a few afternoons on a nudist beach when she'd been on holiday, sneaking away to be on her own.
She climbed out of bed and moved easily across to the window. She threw back the curtains, her breasts bouncing softly high up on her chest. The sun was already shining brightly, promising another hot day. Abi felt that soft tingle again as she stood naked in front of the window, enjoying the warmth of the sun on her body, not really caring in anyone saw her.
Turning, she walked across to the full length mirror that stood in the corner of her room. She looked at herself critically. Abi knew that she looked good, which was perhaps just one of the reasons that she enjoyed being naked. Still looking at herself, Abi reached up and cupped her full breasts in her hands.
Her tanned face was littered with the odd freckle, which she always felt made her look sort of innocent. Her thick, blonde, shoulder length hair was a tangled mass from where she had been sleeping. Despite having just woken up, her blue eyes were bright and alert. Her nose looked quite small, perhaps because her mouth seemed wide, and her lips so sensual – and kissable, she thought, grinning to herself.
She loved the feel of her breasts in her hands, their weight, their shape, their firmness. A shudder went through her as she dragged her thumbs lightly across her nipples, watching and feeling as the dark flesh wrinkled and puckered until her nipples were taut and erect. She turned sideways and gazed at the upward sweep of her breasts, loving how her nipples were perched at the end of them.
As she stood sideways, Abi took in the flat profile of her belly, and – after twisting a little – her firm, shapely bum. She ran a hand over her smooth cheek, enjoying her own touch. She turned back towards the mirror, taking one last look at her tanned body before heading off to the bathroom.
After a quick shower, she was back in front of the mirror, drying herself and then unashamedly looking at her body, at the rise and fall of her breasts, as she reached up to brush her hair. She looked critically at her almost naked mound, at the finely trimmed blonde hair that did little more than mask her pouting lips, and decided that she looked fine to go on the beach in her bikini.
"Looking good," she told herself, before reaching for something to wear.
Abi dragged a tee shirt over her head, not bothering with a bra. The tee shirt just about covered her ass, and for a moment she was tempted to go downstairs dressed like that. But Matt, her brother, might be up already, so – a little reluctantly – she reached into a draw for some underwear.
As she pulled a pair of white panties up her slender legs, her mind wandered back to the day, to National Nude Day. How could she celebrate? What could she do that was for her a little different? Fortunately, Mum was away until the next morning, which should make things easier. With one last glance in the mirror, she headed downstairs.
Matt looked up from the newspaper he was reading as Abi appeared in the kitchen, throwing him a cheerful "Good morning". As always, Matt felt guilty as his cock reacted to his sister. He wriggled uncomfortably in his seat, wishing that he'd put more clothes on than just his shorts, which were doing little to hide his growing bulge.
It had been like this ever since Abi had got back from University for the summer. Somehow she'd grown, filled out – and was now looking incredibly sexy. He looked up again, glancing over the top of the newspaper to drink in the swell of her breasts and the outline of her nipples under her tee shirt, the shape of her ass, her long legs.
He dropped his eyes as Abi looked across at him, his face blushing furiously. Abi smiled to herself. She knew that Matt, who was a year or so younger than her, was looking at her, and how he was reacting to her. She had seen the bulges in his jeans, in his shorts – and had, if she was honest with herself, been both flattered by the attention, and impressed with the size of that bulge.
She knew that he had tried to peep at her in the shower, and when she had sunbathed topless in the garden, albeit lying on her front. And she loved it! Slowly, Abi reached up to a wall cupboard to get some breakfast cereal down. She knew that her tee shirt would ride up, showing off her ass in her tight, white panties. She moved slowly, quite deliberately, standing on her tip toes to show off the shape of her legs.
Across the room, Matt groaned softly, his cock throbbing painfully as he watched Abi. Her panties had ridden up on one side, leaving his sister's creamy buttock naked to his gaze. He licked his lips, as his mouth went dry. As Abi turned back towards him, her tee shirt had caught on her breast, her nipples even more prominent than before.
As she sat down, Abi glanced across at what Matt was reading. It was the headline that caught her eye – "National Nude Day Today" it read.
"What's that about, then?" she asked innocently.
Matt muttered something, not really wanting to talk to Abi about it, knowing that he would only go red with embarrassment again. He had been reading the article, which was about some of the stunts people had pulled the previous year, just before Abi had come down. If he hadn't heard the stairs creak, Abi would have caught him rubbing his cock as he read it.
Abi stood back up, and leant over behind Matt to read the article over his shoulder, her breasts very close to him. Matt felt himself getting hot as Abi read slowly, glancing down at her brother, a germ of an idea forming in her mind.
"Let's go down to the beach for the day," Abi suggested as they finished breakfast.
"Come on," she encouraged him, "Mum isn't due back until tonight."
Their Mum, Jane, was away on business, but was due back that night. Their Dad had died when they were young.
She saw Matt hesitating. He didn't normally enjoy the beach, but the thought of being with Abi in her tiny bikini was enough to make him change his mind.
"Okay then," he told her, hoping his swimming shorts wouldn't give too much away.
An hour later, they had cleared up after breakfast, got changed, and were ready to go. Matt tried not to stare as he watched Abi come downstairs to join him in the hallway.
