Josh thought for a second before an idea popped into his head. He could test to see if this was real and prove it to Danielle in one fell swoop! "Hold on, look down at your breasts for a second."
"What? Why?" Danielle asked.
"Just do it." Danielle shot him a pointed look. "Please?" Danielle sighed, but obeyed, dropping her chin to stare at her abundant bust. Josh gripped the bone tightly and silently wished for his wife's bust to grow. The bone heated in his hand. Josh breathed in, as the flesh of Danielle's breasts quivered and bubbled. In front of both their eyes, Danielle's burgeoning bust pushed out, leaving D-cup behind. Another button in Danielle's top popped loose as her boobs reached E and then F cup.
"See?!" Josh exclaimed.
"See what?" Danielle replied.
"Your breasts! They grew!"
"No they didn't."
"Yes they did! You were watching! You didn't see that?" Josh asked, increasingly frantic. Josh made another silent wish. Another flash of heat. Danielle's breast jiggled, before growing again, inflating like an invisible air pump was attached to each nipple. Her breasts, once tiny little teacups, now blossomed into massive melons, not stopping until they reached a jaw dropping H-cup. They hung there, humongous, stretching Danielle's top to the absolute limit, but somehow not tearing it.
"What about now?"
"What about now?" Danielle replied, still clueless.
"What size is your bra?"
"My bra? C'mon honey do I have to explain how sizes work again. I'm an H-cup."
"H-cup?! Earlier this evening you were a D-cup, and before that you were a B-cup. You seriously don't notice anything weird going on?"
"Just my husband apparently losing his marbles." Danielle replied, by now a little peeved. She'd been looking forward to a nice evening together, maybe even giving her husband a tit-job if the mood struck her. They always enjoyed that. "I mean seriously, boobs don't just grow."
"They do if you make a wish that they do." Josh asserted.
Danielle smiled, indulgently. "Oh, so anyone who wishes they have bigger boobs just get them. Wow, wish all the poor flat chested women knew that."
"No... its not..." Josh protested, flustered. "It's this bone thing." He held it out to show her. "I just hold it in my hand and wish for you breasts to grow and..."
"Holy crap!" Danielle suddenly interjected as Josh felt the bone heat again, and Danielle's breast swelled even further. Danielle reached up to cup her tits, feeling them press against her hands, feeling her skin stretching as flesh spilled into her bosom. This growth spurt seemed particularly potent, as they grew past the size of melons, settling somewhere around M-cup, still very full and firm. Danielle kept expecting her clothes to rip and her bra to snap, but each time they seemed about too, her clothes seemed to adjust, adapting to fit her new size. Danielle looked up at Josh in shock. "Oh my gosh. It's true! They really grew!"