It was a weekend and his sister Mel was staying over with him and his daughter Molly. He had promised to take them shopping and watch another bonus disappear in a plethora of designer labels.

At one point he was walking behind the pair as they chattered together about girlie things. He admired the view, both of his sexy little daughter and his equally sexy sister. Mel, he noticed, was only slightly taller than Molly and although more rounded in the behind (and with bigger breasts) her body was still very girlish. This was one of the reasons he enjoyed having sex with her. She still reminded him of the little girl who happily opened her leg in the playhouse at the bottom of their parent's garden.

He noticed a few men, and even women, eying the pair of them up and he smiled to himself thinking that he was getting what they weren't. Later, when they were sat outside a country pub having lunch, he mentioned the physical similarity between the two of them. They both looked thoughtful at that but said nothing. Anyway, Molly was too busy with her hand up her aunt's skirt to reply.

---

Back at home the shopping was put away, although there was a lot of trying things on and asking for opinions.

"Daddy, which thong suits me best? Auntie Mel said the white one but I like the black," was one question he struggled to answer, as Molly showed him both whilst wearing them.

Later, after dinner, the two of them had gone off upstairs giggling, leaving him to read the paper in the living room.

A while later, he heard them coming downstairs and looked up as they entered the room. He had to look twice as he almost could't believe what he saw. Molly was dressed in one of Mel's work suits, with the skirt suspiciously short, plus her blouse, hold-up stockings and heels. Mel was, in turn, wearing Molly's school uniform and sucking her thumb.

Molly led Mel into the room by the hand and turning to face her said in a mock grown-up voice, "Little Mel, you must be careful of the naughty man who lives round here. He likes to do rude things to little girls like you."

"Gosh Mummy," replied Mel, "would he touch my nice white panties? Perhaps I'd better take them off."

At this, his sister lifted her skirt and began to pull her knickers down. She had just shown the top of her landing strip, when Molly said, "No, you'd better keep them on, just in case."

"What about you Mummy?" replied Mel.

"Oh, I'm alright. See, I haven't got any on." Molly then lifted up her skirt showing her naked ten year old slit to her aunt.

"What a pretty lady part you have, Mummy. May I kiss it?" Mel said in a little girl voice.

"Yes little Mel, you may," Molly answered loftily. At this, Mel got down on her knees and began to lick and nibble Molly's cunny while the girl closed her eyes in enjoyment.

While this was going on he put his paper aside and had to get his cock out to make himself more comfortable.

His daughter meanwhile carried on with the playacting, saying, "Little Mel, the naughty man is nearby, I think we'd better take our clothes off to save them. Stand up and I will undo your shirt."

Mel stood up in front of the girl while Molly carefully undid all the buttons on the shirt and, pulling it out of the waistband of her aunt's skirt, opened it to reveal Mel's pert breasts.

"My, my," Molly chuckled "Aren't they nice?"

At this, she gave each nipple a kiss. The girl than removed her aunt's shirt and skirt leaving her in just her tiny white panties. Mel slowly stripped her niece of the jacket, blouse and skirt but left the hold-ups on her legs.

On the sofa, her father was barely able to control himself at the show going on in front of him. Noticing this, Molly winked slyly at her aunt and said, "Little Mel, I must sacrifice myself to the naughty man to save you!"

The girl then lay down on the living room floor and spread he legs wide, saying, "Naughty man, do what you will to me, but spare little Mel!"

At this, he could hold back no longer and, getting down on the floor between his daughter's thighs, he leaned forward and stroked his prick across her tiny breasts, dribbling pre-cum on them as he did so.

Next, he dragged it down across her stomach and began to wipe it up and down Molly's slit. The little girl was moaning and dribbling juices, opening her legs wider and encouraging him to slip it into her juicy wet hole. When he did, Molly gasped but pushed back, wrapping her legs around his back to make sure he was in as far as he could go. She wasn't long in climaxing and came a second time when her father released his seed deep inside her.

After her father had climbed off her, Molly lay on the floor, smiling beatifically at the ceiling and he returned to the sofa. During all this, Mel had been rubbing herself energetically and breathing hard. Looking down at Molly's cum-covered, swollen labia and erect nipples, she got down on her hands and knees and started to lap at the younger girl's slit. Both of them were moaning with pleasure, as Mel still had her hand inside her own soaking wet panties.

On the sofa, he felt himself getting hard again. Getting down on the floor, he pulled down his sister's knickers and mounted her from behind. Mel accepted him gratefully into her own cunny and, like he had been doing since she was nine years old, he was soon filling her with incestuous cum...