No, she has an accident with the super soldier serum

"Trust me, I'm being extra careful around these-"

Bump!

Jane stepped back to get a better shot of a weapon's development bench and her bare ass bumped a stack of shelves. She turned around just in time to see a beaker of pink liquid tumble off the top shelf.

SPLASH!

"Ick!" Jane spluttered as glowing chemicals oozed down her throat and splashed over her naked breasts. "Ew! What is this? Super soldier serum?"

Jane tried to wipe the liquid from her heaving chest, but it was being rapidly absorbed into the throbbing boobs. As she watched, her already large breasts started to swell as she felt a sensation of strength wash over her skin.

"It's mutating me!" Jane shrieked, staring with wide eyes at her bare flesh.

"What's happening?" Ha'Penny asked, her voice filled with concern.

"The chemicals are..." Jane stammered as she grabbed her newly enlarged boobs and hefted the increased mass, "Giving me bigger tits!"

"Oh..." Ha'Penny snorted, "Lucky! My boob job cost me a fortune."

"This is no laughing matter!" Jane insisted, trying to hold back the swelling flesh with her hands. But the plump orbs continued to grow until she was three cup sizes bigger than before, "I think... I think it's stopped."

Jane stroked her expanded breasts and hardened nipples. Her whole body was tingling and she could feel milk sloshing around inside her bountiful boobs.

"Agent Jane?" Ha'Penny called after Jane had been silent for a moment, "I know this must be a shock... but you have to complete the mission and get out of there quickly. We don't want you getting caught!"

"No, don't want to be caught!" Jane agreed, blushing hotly as she released her breasts and took control of the spy camera in her bracelet. "I just feel... Light headed..."

Swaying from side to side, with her colossal breasts jiggling heavily, Jane continued to search the laboratory. After knocking over several plants, mugs and computer monitors with her swinging tits, she finally located the main project.