It happens right then and there

She feels funny. Her body feels all achey and warm. And she noticed her hair tie was getting looser. Her stomach growls and she almost regrets doing this until...

Her tits start growing, she grabs them "Oohh its finally happening" even though its been like 5 seconds.

Her tits expand "my... My bra... So t..tt..."

She tries to say tight, but shes so aroused its hard for her to focus.

Her tits have nearly doubled in size