I told them to get ready because they needed new lingerie. I also set out the ground rules. What I say, goes. And I choose what they were to wear. They gave the cheeky obligatory 'yes daddy' and got ready. I got my wife to wear a short button-down dress, with no underwear, that was cream in colour. The cream set off her olive complexion nicely and the snug fit showed off her bust and ass so well. Her gf, B, wore a short satin robe which looked amazing on her slim figure. Her nipples were so obvious. 'What underwear, daddy?' 'Did I mention underwear? Why do you think we're going lingerie shopping?' We left and headed to one of the larger malls, and went to a Bras n Things store. The store was a bit busy but I thought that was ideal. A lot of couples shopping and a lot of the guys' heads swiveled when my wife and B walked in. The girls loved the attention. I picked out a few items, like a black thong/bra set for B. The bra was a quarter cup lacy item. For my wife I selected a white lace cheeky panty and matching bra. I told them to put them on and come out and show me. They looked at each other and giggled and went into the same stall. B came out first, in her black bra and thong. She left the door a bit open, so anyone looking (most of the guys in the store) could see my wife in a state of undress. As for B, she stepped out boldly. 'Do you like it, daddy?' 'Do a turn for me' She did and a husband nearby was staring so blatantly. I told B to close her eyes. She did obediently. I said I wanted to feel the lace. I touched it tenderly with one hand, and gestured the guy nearby to come closer and have a feel. He was eager and caressed the waistband. I gestured him to feel B's ass and he was keen, caressed and grabbing. B moaned a little, not knowing that someone else's hand was touching her. I said I needed to check the lace fabric on the bra, and gestured to the guy. He cupped her right breast, feeling the fabric but caressing softly. He stroked his thumb over her long nipples and she whimpered a little. I looked at my wife and she looked shocked, amused and so fucking horny that I was getting her gf felt up in public by a stranger. I told B we were getting that underwear for her. She opened her eyes and saw that it was another guy touching her. She went red, but I could see the arousal in her eyes. She loved that game. I told my wife to show me what she got, while B got dressed. She came out and asked if she could have the same test. I said sure, but her eyes stay open. I told the guy to tell me what he thinks of her lingerie. His hands were all over her, cupping her ass, caressing up her sides to her breasts. She turned her back to him so he could feel both at once. He cupped and stroked across her nipples and I saw them harden as she gasped and groaned and push her ass back into his crotch. I told her we'd take her lingerie too and to get dressed. We had another store to go to.