Let's get the blood flowing!

"Alright! Knee raises, lets go!" Laylah said, perhaps a bit too eagerly as most of the class jumped a little at her sudden command. She fought off a smirk and began lifting her left knee, raising it up to above her pelvis, then putting it back down and shifting a step to the left then repeating the raise with her right knee. The class followed along dutifully as she lead them all.

Miraculously nothing in her ensemble tore, loosened, or became otherwise more unfit to wear during this exercise. When about a minute had passed Laylah returned to a neutral standing position and said, "Okay, good, got the blood pumping a little! Let's keep that up! Jumping Jacks, 1 minute!" She saw the class all smile excitedly at that, catching the eye of the athletic girl in the back and she was beaming.

To Laylah, they were all finally feeling the groove of the workout she was flawlessly leading. To the 10 people watching her, of course, they were all so excited because well, how on earth could you see a girl with tits as big as Laylah's and not perk up a little when she says, "let's do jumping jacks".

She began, and sure enough, those big ol' thangs started a-bouncin', more than they probably would have on a regular day, given there was only one brave little shoulder strap supporting the baby-blue sports bra with a two inch hole right in the middle.

Laylah jumped and jacked, with each hop into the air, each raise of her arms, the hole in the middle of her bra grew larger and larger. Three inches.... four inches.... five! By the forty five second mark, her impromptu cleavage window had ripped so far in either direction that the bright pink of her areolas began to peek out at the edges of the large rip in her bra.

The class as whole began to get, well, a wee bit distracted, and their jumping jacks became ill-timed and slow. Laylah noticed this and said, "C'mon guys, keep up that pace, one-two-one-two..." She said, as she began dictating the preferred tempo the exercise should be following. The group of ten all realized themselves and hurriedly began keeping pace with their buxom instructor's rhythm.

Perhaps a little too satisfied with the class's obedience, Laylah smiled and said "That's it, not much longer now!" Too happy with her command over them to notice her other shoulder strap had snapped, leaving her breasts bouncing more violently than ever!

"Alright, big jump to finish out, HUP!" Laylah said as she jumped high into the air, hands reaching for the ceiling. As her back arched and ample chest puffed out, her baby blue sports bra ended it's long career of service, splitting in half right in the middle, pulling to either side and flying off about 7 feet away to Laylah's right. Laylah came back to earth with a controlled landing, standing up straight and proud with her hands on her hips. The class all used every ounce of their willpower to maintain their collective poker face.

Standing before them, now only in a tiny pair of pink panties and a pair of lime green tennis shoes, was their instructor. Laylah Marsh stood there with her hands on her hips, beathing deep controlled breaths that made her now completely bare, remarkably huge and shapley breasts rise and fall. Her round, pink areola's glistened with a thin sheen of sweat and her pleasingly large nipples were standing stiff in the open air.