The bottoms join in

"Do you feel any of this?" you asked curiously, as you had both hands caressing the stretchy bikini top, which seemed to have a lot of give when you pressed into it, just like how you remember it on Jane's physical body.

Your girlfriend giggled a little, humming to herself as she thought about how to word things. "The short answer is, yes. The longer answer is that it feels different--in ways, it feels better! I'm not a full body right now, I am just the top, which means your hands are covering nearly the entirety of my form like this. And it's not like I have skin and a nervous system and stuff, but my energy just resonates with the fabric like this. It makes for an incredible sensation!"

You nodded, and then looked to the side--spotting an inflated bikini bottom sitting idly next to you on the couch. "...you can be pretty flexible with what you do with these, huh?"

"Yep!" Jane said, before the bikini bottom seemed to lift up, and settle right into your lap. It felt like there was barely any weight at all! Out of sheer curiosity, you lifted the bottoms up, quite literally by the bottom, and tossed it lightly in the air a bit. It was like a squishy toy--you could easily toss the bikini bottoms up a little, and when they landed back in your hands, you felt the ass cheeks jiggle and shake within the fabric like they were really there.

Your girlfriend giggled more when you did that. "Didn't expect that, but that's neat! I'm not so limited by things like 'physics' anymore I guess, that should make it easier for us to have fun!"

"Agreed," you said, holding the bottoms up to examine closely, running a finger along the crotch, the crack of the ass, feeling everything adjust precisely how you would expect. You hugged the bottoms to your chest, pushing Jane's ghostly ass into her ghostly breasts, using one to squeeze the other as your hands massaged the crotch, right about where her pussy would be.

"Ooooh now that's interesting!" Jane said, thrilled that you weren't thinking about her ghostly body in the restrictive physical terms. There was nothing about her that indicated you couldn't mash her ass to her breasts like this, so you just did it! In response, you felt the weight and wriggling of an excited spectral presence jiggling in your hands. "...You know, if you wanted to put these on, I'd be able to do things to your body that nobody would even know about while you're out in public. You know like the girls who conceal vibrators in themselves when outside? I could do the same!"

You blinked. "Couldn't you just go in my boxers instead?"

"Oh, I definitely could. But, I won't! It's bikini bottoms or bust."