Cosmic, 2

Jill's eye's widened and her breasts "perked up" growing in size until her bikini top burst. The stretchy material of her shorts managed to hold on as Jill's excitement caused an involuntary surge of extreme strength. Her quads and glutes increased in mass along with the rest of her sleek yet defined muscles.

"Look who's back on plain old Earth,"

There was a miniature sonic boom as the teen brunette blinked across the yard and wrapped her arms around Liz. Her hug looked almost cute in it's innocent, except it was followed up by a passionate, tongue-heavy kiss. She grew to seven feet tall in Liz's arms with basketball sized tits that still couldn't compare to Liz's magnificent bust.

"Mmmm, somebody's been eating her vegetables. I'm surprised you're not Miss Muscle all the time!"

"Oh this?" she flexed a grapefruit sized bicep that steamed as water beaded off her skin.
"Not even trying..I just feel so PUMPED right now! I usually hold back, Dylan moans about there being too many earthquakes,"

Jill flexed her calf extending her foot, heel off the ground. The concrete CRACKED creating a 5.0 tremor that set off more car alarms than a thunderclap.

"It's gets hard to fit inside the house too. I've already had to rebuild it 39 times now! Plus I actually think it's pretty hot to hold back. It's like trying not to orgasm!"

The brunette ran her hands over Liz, who grew a few inches taller and a bit buffer in response. She smacked Liz's ass. The shockwave shattered every window in a 3 mile radius and made buildings shudder.

"I can't wait to here what you've been up to..."

Later that day, the girls were strolling down a busy street in the nightlife district. It was almost sundown and people were rushing to dinner, only to be rudely interrupted by two naked Amazon supergods holding hands.

THUMP THUMP THUMP, though they were only 7' 10" their heavy footfalls sounded like giants approaching.

"Planets are fun but stars really make me go wild. I come so hard I have to be careful not tear them apart too quickly"

Jill, extremely aroused, played with her nipple in between knocking over lampposts with one finger flick.

"Mmm, what about...galaxies? I mean...it's scientifically impossible but.."

"Oh naughty...of course stars are just a tease!" Liz giggled at the thought.
"You think just because it's impossible, I can't do it with the slightest bit of effort?"
Liz filled out a bit more creating more tremors.
"Hehe...or by accident?"

Jill slid her finger over her pussy as Liz described her godlike power. Her voice was like a drug, completely ensnaring the brunette's attention.
She didn't notice the luxury sedan plow into her side. Her muscled leg easily crushed the engine block as she tore through the wreck.
The driver was incensed but as he stood up to confront Jill, whose thigh was as big as his girlfriend's entire body, he realized that challenging two teen gods was not going to end well.