I'd come up with a plan of action, and I called Rachel and said I had something I wanted us to do.
She arrived, early, wearing her bib overall shorts and a striped T-shirt. I took a look at her outfit and grabbed her hand.
"Come on, we're going shopping."
We walked to the store we'd had a bunch of fun at recently, and headed in.
"What panties are you wearing?" I asked.
"Normal green ones," she said. "Why?"
"What do you have with you?"
"Normal ones."
"OK," I said, grabbing a basket, "we're going to need some thongs then."
We went through the women's underwear section on the way further in to the store, and I got a multipack of colored cotton thongs.
"First up, you need a tight black dress," I said.
We went to the dress section, and I found a little stretchy black dress with spaghetti straps.
"Try this," I said, and she looked around nervously, then unbuttoned the straps on her bib, and took her T-shirt off, handing it to me.
"You'll want to lose the bra, too."
She took that off, gave it to me, and slipped the dress over her head. I saw Anne, the sales assistant, coming towards us as Rachel pulled her shorts down and got the dress covering her butt up. Anne was smiling.
Rachel was properly in the dress by the time Anne got to us. She looked good in it, and it fit her like a second skin.
"I know you know we have changing rooms," Anne said as I put Rachel's clothes in the basket.
"She's looking for a whole outfit, and thought this would be more efficient than going back and forth," I told her with a grin.
"Oh baby," Anne said to Rachel, "You can see your panty line through that dress. Take them off."
"We've got..." said Rachel, but Anne interrupted her. "Off."
Anne bent down, lifted the dress and gripped Rachel's panties at the waist and pulled them down her legs. She handed them to me as she straightened up, and I put them in the basket with her other clothes. Rachel pulled the hem of the dress back down again quickly. I saw a man watching us with an amused expression, having just been treated to a view of Rachel's bare backside.
"Also, let's unhook the shoulder straps," she said pushing them off Rachel's shoulders. "You can tuck them inside the dress, and it looks prettier."
Anne slid the straps down Rachel's arms, then pushed the top of the dress down so she could get her arms out of them. The guy watching us just stared at her back as I watched her tits pop in to view.
Anne tucked the straps into the dress, and fixed the top again, taking the opportunity to feel Rachel's tits as she tucked them back in.
"What else are you looking for?" Anne asked me.
"I'd like stockings, but they won't work under that dress, so I guess thigh high hold ups."
"Sure," she said, taking Rachel's hand in her own, "this way."
With the man following us discreetly, we headed over to the hosiery section, and Anne found the black thigh high selection quickly.
"Anything in particular?" she asked.
"Fishnets, I think," I said.
She found some fishnets, and had Rachel take her shoes and socks off so she could put them on her. She again lifted the dress so the guy watching could see her butt, then rolled the stockings up her legs. When she'd got the tops of both stockings aligned to her liking, Anne wiped her fingers through Rachel's pussy. She straightened up and presented her fingers to Rachel's face. Rachel sucked them clean, and Anne pulled her dress back down.
"Shoes?" she said to me.
"Shoes," I said.
Rachel put her feet back in her sneakers, but didn't do them up. She handed me her socks, and I put them in the basket. We headed off to the shoe section, where Anne waved over a young guy.
"This is Adam, he'll be helping with shoes."
"Hi," said Adam, looking approvingly at Rachel. "What are we looking for?"
"High heels," said Anne. "The higher the better."
"What size are you?" he asked.
"She doesn't know," Anne said, before Rachel could say anything. Adam just looked at her, a little confused, then went to get the foot measuring device. He came back, and put it on the floor in front of one of their little stools, and had her sit down. He sat on the stool, and lifted her left foot to remove the sneaker. At this point, he could see most of the way up her skirt, and he grinned. He measured her foot, then put it down. He picked up her right foot and removed the sneaker, then lifted it a little higher before measuring it - his eyes almost popped out when he saw, fleetingly, all the way to her pussy. Rachel blushed and looked away.
Now he had the size, Adam went and got some shoes. He came back with black stilettos. He sat down and lifted Rachel's feet, one at a time, putting the shoe on and getting a glimpse of her pussy each time. He helped her up. They looked OK, and she tottered around in them for a few seconds.
"Do they fit OK?" asked Anne.
Rachel nodded.
"Do you have anything with a rounder toe, and maybe a platform sole?" I asked him. He went to look.
He came back with exactly what I'd been picturing in my head. He sat back down on his stool, and Rachel came over to have her shoes swapped while standing. This time she wasn't flashing him her pussy, which I think she was glad of.
She tottered around in the new shoes, and nodded that they were OK.
"Anything else?" asked Anne.
"I don't think so," I said.
"OK," said Anne. "Take that off, baby, and we can go and ring you up."
Rachel looked shocked. She looked at me, then Anne, then Adam. We just looked back at her.
"Quickly," said Anne, "before somebody sees you."
There were already people looking at her, but she sat down and let Adam take the shoes off. He went to put them in the box for her.
She pulled her dress up a little and rolled the stockings off her legs.
"Can I have my panties now?" she asked.
"No," I said, "they cause a line in the dress."
Rachel sighed, and pulled the dress up and over her head. She was still sitting, so nobody was looking right at her, but Adam was startled when he came out of the back room with the shoe box to see her sitting there naked.
"Can I have my clothes, please," she asked me.
"What do you want first?" I asked, looking through the basket.
"Panties," she hissed at me.
