Y2K Fish-eye 2x2 Photo Booth Collage

Based on number_of_photos clear real-life photos uploaded by the user, generate a vertical 2x2 four-grid style photo booth sticker collage. [Character Consistency] Strictly preserve the identity features of the people, including face shape, features, skin tone, and hair base. They must clearly look like the same person/pair in all four photos without excessive filtering. [Format] 2x2 vertical collage. Each grid is an independent fish-eye lens selfie with slightly exaggerated perspectives. [Style] Y2K photo booth machine, fish-eye selfie, colored flash, low-res CCD camera texture, cute graffiti stickers. Redesign characters in a outfit_style outfit with candy colors and Y2K accessories like jelly sunglasses or hair clips. [Background] Rich Y2K spaces like neon signs, CD walls, or photo walls. [Poses] Different expressions and distances in each grid (e.g., peace sign, goofy face, winking). [Stickers] Add cherries, stars, and bubble text like 'LOVE BUG' without covering faces. [Texture] Flash-on look, digital noise, high saturation candy colors, realistic skin texture.