In a beautiful afternoon at the park with Rico playing on the swings while Princess Elise is behind him, pushing him higher to swing, smiling to see him having a lot of. The idea of him swinging higher made her have a good idea what she's planning for him.

Elise: Rico, I have something special for you to do for me?

Rico: yes, Mommy Elise? What idea do you have in mind?

Elise: I've thought about a fun idea where we can go high up with you inflating me to be your big blimp. It's going to be really fun~.

Rico: that sounds really fun, Mommy. Let's do it~!

He stop swinging, getting of the swings and feel her scooping him up in her arms, putting him on her back for a piggyback ride, carrying him to the nearby shack for a helium tank and the hose. As they set up the helium tank, Elise grabs the hose that's connected to the nozzle, looking at Rico with a smile on her face before she puts it in her mouth.

Elise: are you ready for this, sweetheart~?

Rico: yes, Mommy Elise, I'm ready for us to go flying around for a while~.

Elise: good boy. Let's go high up for our special day~.

Rico: yay! Get as big as you can do everyone in the city will know you as the big blimpy princess of Soleanna, Mommy~.

Elise put the hose in her mouth, turning on the helium tank as it makes a loud hissing sound, puffing her cheeks up, feeling her belly expanding, patting it like a drum, then feeling her butt and thighs expanding, stretching out her dress that's now exposing her panties. Rico giggles, hanging onto her back, seeing that they're now floating up from the ground, gently bouncing on her while seeing her breast getting bigger, lifting her entire dress more. Elise giggles, feeling her arms and legs getting wide, spitting out the hose as she's now a big blimp ready to float around the city.

Rico: you're now a really big blimp, Mommy Elise. Everyone is going to love this~.

Elise: *muffled* yes they will, baby, especially with you on my side. You love me as your personal blimp, right~? *Chuckles*

Rico: of course I love you so much inflated, Mommy. You look really beautiful when you're my big blimp~.

Elise: *muffled* aww, thank you, Rico. It really means a lot to me. Now, let's go to the city and later, we'll have a good time at home~.

They continue floating to the city where everyone is cheering to the see the princess of Soleanna is now a big blimp and entertainment. Rico relax on her large ballooned butt, pulling her panties down to tease her exposed crack, rubbing her cheeks that made her moan softly. Eliss giggles feeling his small hands rubbing her Inflated belly and rubbing her breasts, teasing her erect nipples while they float above like a big parade balloon for a while until they fly back home to the large mansion. Now back at home, Rico takes her panties off, getting her completely naked with him as he puts his member inside of her, gently thrusting in her.

Elise: *muffled moans* oh yes, Rico. Keep going for Mommy~!

Rico: it feels so good doing this to my blimpy princess, hehe. I love doing this with you a lot~.

Elise: *muffled* I'm loving this a lot too, baby. Your little peepee feel so good pumping my fat butt up~.

Rico: *panting* and I'll keep going for you, Mommy Elise. Enjoy being my big blimp for me~.

He keeps thrusting more faster, rubbing her inflated clit to make her moan lustfully, feeling her getting more wet. Elise roll her eyes in the back of her head, flapping her inflated hands to feel him pumping her up that is really addicting and hope this never ends. Rico was getting close to his limit to releasing all of his love deep in her womb, feeling her inflated butt wobbling a lot in front of him that's mesmerizing.

Rico: looks like I'm close to letting it all out, Mommy Elise. I can't hold it much longer~.

Elise: *muffled* good, baby. I need you to fill me up with all of your love. Mommy need all of it~.

Rico: *moans lustfully* I'm going to fill you up now... It's coming out~.

Elise: *muffled panting* ohh... I can feel your warmth filling this princess up, baby~.

She moans more to feel his seed now filling deep in her inflated pussy, feeling him teasing her clit that made her squirt on him, panting from her climax. Rico slowly takes his member out, covered front their combined juice, walking around to cuddle between her inflated breasts, and give her a big kiss while playing with her boobs, squishing then gently. They moan softly in the kiss, tongue dancing together, slowly breaking the kiss with a satisfied smile.

Elise: *muffled giggles* that was really good, Rico. You filled this princess very well~.

Rico: thank you for being a big blimpy princess for me, Mommy Elise. You're a really good blimp~.

Elise: *muffled* you're welcome, baby. I'm glad to make you happy today. It looks like your little peepee is still hard. I can give you more pleasure~.

Rico: sure. You can kiss it nonstop and I'll

Elise smirks, nodding to his question as he brings his member to her plump lips, feeling her kissing the tip gently that made him chuckle to feel her tongue licking it. Rico play with her inflated breasts, making them squeak and creak that made her moan softly due to how sensitive she is while inflated. Elise love to taste his cock, looking at his eyes full of lust as she was really proud of herself to be his biggest Soleanna princess ever.