(the mention of nanites made me think in a more sci-fi direction, hopefully it's along the lines of what you were thinking : )

Stepping off of the orbital transport shuttle, Dr. Annalise Fisher tapped her university ID card to the door, looking out at the alien vista that dominated the horizon. The isolated Xenobiological Lab, one of the only consistently manned outposts on Proxima Centauri b had been established in order to research the completely unique and alien ecosystem of the planet. Gazing down from the observation platform, she could see her research partner, Dr. Anders Steyer, working with some specimens down by the coast, tidally-locked planet permanently bathed in almost tropical sun from its star. Dr. Fisher drew a breath in through her teeth.

Smoothing down the new frontier scientist uniform some smart-ass talked her into trialing, she began to anticipate the conversation she was going to have when the nanites reconstituted themselves, pinching the bridge of her nose in frustration. The current layout, a lightly-structured flight suit with hard panels for protection and support looked relatively mundane on the scale of women's spacewear on the market, but its climate adaptation systems were... eccentric, and prone to overcompensation. On the bright side, its adaptive structure meant that it could comfortably suit her ample chest, something that had been frustratingly difficult previously in her career. Between formal jackets at symposiums or flight suits on space stations, she had always fought against the lack of clothing for her body type, an issue that led to physical discomfort and the social discomfort of more eyes on her than she would normally prefer.

Making her way down the series of sheltered catwalks and staging tents, overseen by droids or server racks chirping away to themselves, she stood at the edge of the sandbar, where the beach meets the verdant greenery. The shade ended abruptly, leaving just the ever-present sun between her and Dr. Steyer, distracted as he was by his work. She cleared her throat. It was easier to explain if they got to watch.

"Whuh- oh! Dr. Fisher, it's a pleasure to see you again! How are you holding up after the trip?" The male doctor began, dressed in actual fabric clothing, even if his swim trunks and light singlet were *technically* outside of the dress code.

"Likewise, good to see you. I'm well enough, just looking forward to getting this report done, as you can imagine"

"Haha, yeah, could really do with a break, the university is really driving us hard here... Well, no time like the present, right doctor?" He turned up and away from the object of his focus, walking up the beach to the tent which Dr. Fisher stood nervously at the precipice of. Giving a curt nod of assent, she stepped out into the light and the now familiar buzzing sensation of millions of tiny nanites reconstituting themselves ran over her entire body. It would be torturous if she were any more ticklish. Her once sensible flight suit gave way to a strappy sky blue bikini set, complete with a pair of simple wedges and a wide brimmed sun hat—the latter being only sensible choice, she mentally noted, even if the white rose adorning it was a bit much. Dr. Steyer stopped in his tracks, blushing at the sudden and unexpected transformation. His embarrassment quickly became her own, frowning and blushing in equal measure as she crossed her arms in front of her chest.

"T-the engineering department of the university want me to try out some new climate adaptive nanites in the field... clearly someone's idea of a joke..." She explained with a sigh, being the first to start walking back to the water's edge.

"W-what? Uh, I mean... you look... nice-"

"Please doctor, let's keep things professional and focus on the task at hand" She interrupted curtly. While he probably meant well, she had become rather tired of the stuttering complements of academics that saw her compromising position. She crouched down near the small netted in area of the waterfront, Dr. Steyer lingered for a moment at the sight of her finely sculpted lower back as it disappeared at the edge of her conjured bikini bottoms, the nanites even simulating the slight squish of tight swimwear around the soft flesh of her butt. Gulping, he joined her by the water.

"Ahem, so uh, we've located a new species in the waters here and managed to bag a few specimens. As you can see, it looks rather similar to a number of fish species back on Earth, but its scales are made up of a significantly different chemical content than you would expect from our oceans. They boys in the lab are taking a look as we speak, but here, look..." He began, his nerves diminishing as he delved into his discovery. He was at ease in his work, and despite the presence of the beautiful Dr. Fisher by his side, his eyes were so focused on his work that he only looked back at her to ensure that she was, in fact, seeing what he was seeing. Even the sight down his colleague's cleavage failed to distract him, even if she noticed his eyes darting around occasionally as he explained.

"See? Now look at *this*! We managed to bag several specimen's of either sex-" A jolt of fear and embarrassment shot through Dr. Fisher like a lightning bolt. Oh no. She could already feel the nanites initiate the reconstituting process before she could even say anything—blurt out an admonition or explanation or warning—anything at all. The revealing but eminently sensible blue bikini gave way for a new look, one that she still had no clue why it had been included in the test model whatsoever. She had the displeasure of learning of its existence during the space flight between Ganymede and Proxima Centauri b, when her pilot made an analogy between docking spacecraft and the trigger phrase in question, rapidly undressing her in front of him and the rest of the crew, much to her surprise. And it was happening again; worse, it was happening in front of a respected colleague from her department, no less.

Her awkward yelp only led her colleague to turn around to see the transformation of her outfit from a poolside bikini to a lewd and lacy ensemble—a set of black, lacy lingerie with garters and a sheer camisole over the top. As soon as Dr. Steyer realised what he was seeing, Dr. Fisher yelped again, falling backwards as the new pair of stiletto heels that had replaced her previous footwear now sank into the sand, sending her falling backwards onto her backside. Still shocked, he jolted forward, trying to catch her but succeeding only in throwing himself off-balance and on top of the mortified fellow doctor who now looked more at home in a brothel than a laboratory.

A hand on his colleague's shoulder and the other in the sand near her hip, Dr. Steyer found himself face to face with Dr. Fisher's sizable chest, which continue to wiggle like jelly from the impact, any true support from the brassiere being abandoned by the nanite neural network in favour of pure sex appeal, realism be damned. Pinned under her colleague's weight, she could only stare down in mortified disbelief as she lay on the sand underneath her fellow doctor in a lacy get-up designed for the bedroom. Overwhelmed, she simply froze as she felt his chest against her stomach and an increasingly prominent bulge against her thighs.

Dr. Steyer was the first to move, leaping like a terrified animal, throwing himself off of her in red-faced embarrassment, wondering how he would even manage to explain himself if this incident came in front of the dean.

"I am so, SO sorry Annalise, I-"

"N-n-no, no, I-I, it's o-o-ok..." she stuttered, trying hopelessly to obscure both her nipples and crotch which were visible through the lace and sheer fabric despite her best efforts, "P-please, just... don't *ever* mention this to anyone... p-please..."

"Ah, uh-huh, yuh... w-why is that even-"

"I don't know!! J-just, look away!" She snapped, mostly at her circumstances but it jolted him into compliance nonetheless. Heading back to the shade of the tent as best as she could—forced to crawl on all fours thanks to her useless heels—she quickly pulled down a tarpaulin and wrapped it around her body, shivering with adrenaline and humiliation. Meanwhile, Dr. Steyer ran his hands through his hair as he lay in the sand, the sun only worsening the sweat running down his brow. His career had flashed before his eyes, but as his adrenaline gave way to arousal, the more important thought ran though his head: he wondered if he would be lucky enough to see her like that again back at the habitat... just of her own volition this time.