Mira noted with much satisfaction that her boyfriend's cock was visibly swelling and growing into his own mouth.
The lipstick's spell was bound to her, as the rightful owner of the item, and its effect seemed different for other people. While she was able to turn him almost completely female, Kieran as a cis dude seemed only able to enhance maleness, turning whatever his lips touched into something more virile - Mira's clitoris at first, which had grown into a penis, and now his own dick as he was self-sucking.
Mira kept Kieran's head down as he approached climax, forceing him to suck on and gulp down his own seed. Another magical tingle ran through his cock and it pushed into his mouth further, enlargeing into a thick 12 incher. The monster member contracted strongly and a geyser of cum exploded into Kieran's mouth as he let out a muffled scream of pleasure. Mira let go of his head so he could breathe and the cock escaped her boyfriend's lips, throbbing free and ejaculating clear white cum all over himself.
When Keiran could finally catch his breath, Mira took a tissue and wiped the cum and lipstick off his mouth and dick as it was softening. It looked huge even then, perhaps 8 inches of handsome meat; a pleasing sight for her, though a strange one on such a girlish frame with soft feminine features. He was about her height now, only skinnier and with larger breasts, like the photoshopped girls on popular magazines, but in flesh. The only difference was the huge cock between his legs, larger than most she had seen in porn.
"Not really an improvement for you now, is it? That serves you right for being a naughty girl." Mira picked up the lipstick and put it safely in her pocket. After a moment of reflexion, she took Kieran's hand and encouraged him to get up.
"I think we should go out on a belated birthday date today, so here's some clothes for you to wear until we buy you something that fits better..."
Mira rumaged through her drawers and picked a few clothing items, helping Kieran as he slid them on. First a sexy pair of semi-transparent black panties, which hardly contained his length - it was on the verge of slipping out at the least pull, but Mira wouldn't let him tuck his member with tape like she had done to herself. She hid his "problem" under a cute miniskirt, which did an acceptable job at flattening most of his bulge.
She found no bra that fitted her boyfriend's ample bossom so he went braless, covering his chest with a wrap-around crop top that crossed on his chest and was laced in his back. He looked absolutely gorgeous, with his delicate nipples poking through the thin fabric. Mira was slighty turned on and she felt her own penis stir a bit, tugging on the tape in her underwear.
"I think we're ready to hit the mall for a shopping session. You really need a bra Kiera," Mira added as she noticed with delight how bouncy Kieran's breasts were without support. She handed Kieran a purse and a pair of knee-high boots that matched his outfit, and they exited their small flat, ready to face the outside world.