He paints her chest first

"The top half," Robin said immediately, his eyes locking onto Sophie’s chest. "If I'm going to do this, I need to focus on one area at a time. And... it just makes sense to work top-down."

"Good call," Viki agreed, reaching into the craft drawer. "But we can't just guess where the clothes go. We need a reference model." She grabbed one of Sophie’s tight-fitted tank tops from the laundry basket and slipped off her own t-shirt. Robin blushed as both his female roomates were momentarily topless in front of him. The unashamed Viki quickly donned Aofie's blue tank top. It was a bit of a squeeze, but it held its shape. "Ta-da! Your blueprint, Robin. Paint exactly what you see on me, onto... her."

Robin nodded, grabbing a brush and sponge and dipping it into a pot of sky-blue neon paint. "Okay. Classic tank top. I can do this."

Sophie stood in the center of the room, her arms slightly raised, shivering. "This is so weird. I feel like I'm about to get a spray tan in prison."

"Just hold still," Robin mumbled, dipping the sponge again. He stepped closer, his breath hitching as he raised the paint-loaded sponge to her chest.

He made contact with her collarbone. The sensation was cold and wet, causing Sophie to gasp. "It's cold!"

"I know, I know," Robin said, his voice strained. He dragged the sponge down over her chest, painting a wide blue stripe over her skin. To his amazement, the paint didn't vanish. It stayed on her skin, glowing softly against her pale complexion.

"It's working!" Sophie cried out, looking down at the blue stripe on her chest. "I'm wearing a blue stripe!"

"It is working," Robin confirmed, emboldened. He went for the large areas, sponging paint over her shoulders and down her arms. But as the paint dried, he noticed an issue. It was becoming translucent. The curse was affecting it, making it fade into her skin tone rather than disappear completely.

"It's... fading," Robin frowned. "I need to do layers. Lots of layers."

He dunked a brush into the paint and started to outline the neckline. He moved around her, his eyes darting between Viki in her snug reference tank and Sophie’s naked, trembling form.

"Okay, working on the... um... chest area," Robin announced, his face turning red.

He moved in front of her, brush hovering over her breasts. He dipped the brush and brought it to the curve of her right breast. He needed to mimic the drape of the fabric. He swept the brush underneath the curve, his knuckles brushing against the soft, heavy underside of her breast.

Sophie jumped. "Robin! Watch the hands!"

"I have to get the shadowing!" Robin insisted, though his hand was shaking. "Viki's shirt has a seam right... here." He brought the brush up to the side of her breast, his fingers resting against her ribcage for stability. He painted a line up the side, his thumb inadvertently grazing her nipple.

"Ahhh!" Sophie squeaked, slapping her hand over her chest. "That's sensitive!"

"Sorry! Sorry!" Robin yelped. "It's just... the fabric contour. I have to paint the... shape. And the shape is... very prominent."

"Prominent?" Sophie squeaked.

"Perky," Viki corrected from the side, crossing her arms. "Get it right, Robin. Don't skimp on the nipple area. In a real shirt, you'd see the outline. Do the details."

Robin groaned inwardly. He leaned in, biting his lip. He applied a thicker layer of blue paint directly over her areola. He used the tip of the brush to circle the hardened bud, the friction of the bristles against the sensitive skin making Sophie’s breath hitch.

"Robin..." Sophie whimpered, her eyes squeezing shut. "That feels... really weird."

"I'm just trying to make it opaque!" Robin defended himself, though he was taking agonizingly long to ensure the paint was thick enough. He swirled the brush around her nipple, coating it completely, then switched to a sponge to dab the surrounding area, pressing the soft foam against her breast.

The pressure of the sponge, combined with the cool paint and the friction of the bristles, was creating a maddening sensation. Sophie could feel her nipples tightening further under his ministrations.

"There," Robin said, pulling back slightly to inspect his work. "One breast done. Now... the other."

He moved to her left side. Sophie tried to brace herself, but she wasn't prepared for when Robin decided he needed to steady the canvas with his free hand. He placed his palm flat against her stomach, his fingers splaying out, his pinky resting dangerously low on her abdomen.

"Hold still," he murmured, dipping the brush again. He painted the curve of her left breast, copying the Viki-line. He moved closer to the nipple, his face inches from her skin. He could smell her beauty, see the goosebumps rising on her flesh.

He painted the nipple, using small, stippling motions to get the paint to adhere. "It's not covering well enough," he muttered. "I need to build it up."

"Robin, please," Sophie gasped. "It's tingling."

"Almost done," Robin said, his voice tight. He switched to a finger, smoothing the paint out with the pad of his thumb. He rubbed her nipple in a circular motion, ostensibly to blend the paint, but the sensation was electric.

"OH!" Sophie cried out, her back arching, pushing her breast further into his hand. "Don't... don't rub it!"

"Sorry! Texture blending!" Robin blurted out, snatching his hand away. "Okay! Chest is done!"

He stepped back, panting. Sophie looked down. Her chest was covered in a thick, sky-blue layer of paint, perfectly mimicking the shape of a tight tank top, complete with defined, darker circles where her nipples were. It made her bottomless features look all the more alluring and naked, but it worked.

"It... it actually looks like a shirt," Viki said, stunned.

"Thank God! I mean, I can feel the paint drying, tightening my skin a bit, but I look clothed!" Sofie look relieved.

"See?" Viki said, stepping closer. "It looks great. Robin, you missed a spot under the arm though. And the cleavage needs more shadow to look realistic."

"More shadow?" Robin and Sophie asked in unison.

"Lots of shadow," Viki grinned. "Get back in there, Robin. You need to get deep in that cleavage. Don't be shy."

Sophie let out a whimper of despair as Robin stepped forward again, brush raised. "For science," he whispered, mostly to himself, dipping the brush into the dark blue shadow paint. He touched up her sensitive underboob, before stepping back tonadmire the finished top.