You and Vivian have been friends for a while now ever since she entered your party to help on your adventure to save Peach, though from when she started as slim and fit, she has grown a bit of a belly over the time, a round one in fact, not only that but its the only thing that changed on her so it was pretty obvious. One day you both we're walking back in Boggly Woods because you wanted to check if you did'nt forget anything she was just following beside you, resting her hands on top of her belly, you tak the oportunity to ask her about her sudden belly, first she's a bit stunned because she was'nt expecting you to ask but then sighs and says. "W-well, I've been eating a bit much as you can see... b-but I-I'm fine I swear! I-its just that there has been so much good food in this adventure that I could'nt resist-" She looks away. "...and I was being fed too... not only by myself but with someone else..." She then looks at you. "A-anyways don't worry about it, its just a belly, it'll dissapear... eventualy." She ends that with a giggle but looks at you a bit nervous and embarassed, still with her hands on top of her belly, she knows she can't hide it.