Going to the Video games isle, you set your eyes on a set of Fortnite costumes. Glancing over each one, you settle on a pink bear with a heart on the chest. Slipping your legs into the legs of the costume, your thighs begin tingling. After sliding into the torso, your waist begins feeling cramped. Once you get your arms in and put the head on, your thighs feel closer to each other than before. And were your pecs always that swollen? Your age rapidly progresses from 13 to 21, your height shooting up to 6' 5", unusually tall for the form you'll soon assume. You feel your thighs thickening as your hips also widen in the process. The fat in your gut and face dissolve, your spine arches, and your penis begins to retract. Feeling up your slim waist and goddess-like thighs, a warmth begins in your chest, spreading to your neck and much smaller shoulders. Your Adam's apple slides into your throat and down into your stomach. The feeling makes you gag slightly, noticing that it felt more feminine, and somehow... a little bubbly? But you can't dwell on how you were able to sense that from a gag, because the warmth in your chest flares up. Unbeknownst to you, as a pained expression spreads across your face, the bear head mimics said distressed expression. The burning feeling in your chest begins to lessen slightly as your already swollen pecs begin expanding even more. They fill out to a modest CC-cup. The now barely sensable burning gives way to pleasure as you curiously touch your new, perky breasts. As you continue to feel your extremely sensitive boobs, your now nub-sized member shrinks back further, being swallowed up by your new vagina. Reaching your now slender hand under the waistband of the suit's now skin-tight leggings, you begin to caress your new virgin folds. Sticking a finger in, the already overwhelming pleasure from fondling your breasts with your other hand breaks the dam. You start to moan sensually with your new voice as you continue to explore this new body. Once you finish, you sit up on your now much larger rear to see your uncle Jack standing at the bottom of the stairs with a dumbfounded look on his face.