Jacob changes Clothes

"...you were wearing my uniform AND knew how to do my job to my standards."
It was a quick flash and a poof and Jacob was wearing the pink and white uniform, complete with a Doughnut Factory hat, but he didn't know any more than he already did. Cassy walked around the counter and gave him a big hug, "This is so incredible, ring me when you get off my shift."
"What!" he exclaimed, "You can't just leave me like this, change me BACK!"
Cassy giggled, "It's about time you did some work Jacob...or should I say Cassy?"
"No, but..."
"If you don't do my shift I'll think up something much more horrible to do to you Jacob," Cassy warned and then she looked him up and down, she grinned maniacally with a brand new idea, "I just realized something, oh YES! You can fill up my tip jar for me!"
"How?" Jacob asked timidly.
"I wish you had massive breasts Jacob," she smiled, now comfortable and confident enough to just blurt out the wishes, "In addition I wish the uniform and you're new bra would grow to accommodate your bigger melons into showing as much cleavage as possible to customers. I also wish that you couldn't change their appearance until I change you back to normal!"
Jacob reached to his chest, the the sudden pressure again and the intense feeling of power, he felt them expanding and blowing up as if someone was pumping into them like a flat tire. Jacob watched in horror as his originally small breasts transformed into massive ones, going from moderate to porn star size.
"Holy crap," Jacob said in surprise, feeling them jiggle and bounce against his chest, he now had a massive cleavage with no way of hiding it. Immediately they were heavy and he could already feel himself slouching.
"Wow I'd look good with big tits," Cassy laughed and then she turned for the door, "Remember to ring me when my shift ends!"
Jacob looked to the empty restaurant, and then to the clock on the wall, it was nearly 1 o'clock in the afternoon, soon customers would be coming in to get their doughnut fix for lunch.
What was he going to do next?