Brian flexed his arm a bit and then thought about Emily's suggestions, and then decided to go one step at a time. He merely thought about his old self originally and his friends were gawking at him as his frame and impressive muscles shrank as the tight clothing he wore shrank a little and weren't stretched out. Then with the second thought his frame shrank inward a little as his features got softer. His clothing were shifting, the underwear quite a bit as reality was shifted a bit, and Emily felt a little disappointed as Brian's changes stopped with him just being another girl instead of some abnormality super cow female prodigy celebrity thingy. Brian started to gain a few insights into his current reality. Her name was now Cassie, the name her mom wanted to name her first girl so now Cassie was named Rebecca. Besides that there were feelings and information about living as a young woman which Cassie found she didn't dislike. She at least didn't feel dysphoric right now, she also generally knew her sizes like her breasts being a B-cup a bit smaller than Emily's.
Emily sighed and said "Come on. Where's the beef?!?"
Cassie stuck her tongue out a bit and said "One step at a time. I just wanted to make sure I felt comfortable being female in the first place."
"Well you were fine with all those muscles as a man. Just pump up those proportions and add an udder or something." Emily was demanding." Cassie had a thought and then Emily started to feel itchy as she saw black and white hairs start to grow. Although the black hair was most prominent the white hairs seemed to grow in circles in certain areas... like her breasts which also started to feel a bit swollen. Her ears grew flappy as her legs grew longer and more muscular, and her shoes disappeared as her fleshy feet fused into hooves. As her face elongated a little and her vocal chords changed allowing her to let out a bovine "moo!" as her breasts finished up growing into F-cups as some squishy pink flesh started to bulged out of her abdomen as she gained an udder as well. Her clothes had shifted into a bikini and some stretchy pants.
Emily's voice was deeper and rougher "What the hell Cassie?"
"You want to be a popular beef styled female athlete you can be one yourself minotaur." They had to get to school pretty quick at that point, and Emily felt a bit more awkward in her now mighty and very revealing form.