Meet your younger self! Generate FREE Time-Hop Portraits with Google’s Nano Banana (Gemini 2.5 Flash Image)

Generate FREE Time-Hop Portraits with Google’s Nano Banana (Gemini 2.5 Flash Image) – Free Prompts Inside!

Ever wondered what it would look like if your present-day self met your younger self? You can generate FREE Time-Hop Portraits with Google’s Nano Banana (Gemini 2.5 Flash Image) that place both versions of you side by side. The best part: you don’t need expensive tools or complicated workflows. Just copy, paste, and tweak the ready-made prompts below.

In this post, I’ll walk you through the exact commands I used to create my own “past meets present” portraits, plus I’ll show you how to customize them for your own look.

Why Nano Banana is Perfect for This

Nano Banana (Gemini 2.5 Flash Image) excels at:

Character consistency: Keeping your face recognizable across ages.
Photorealism: Lighting, detail, and proportions that feel camera-accurate.
Conversational editing: Easily refine prompts if the result isn’t perfect.

This makes it ideal for “you with your younger self” portraits, where likeness and realism matter most.

Step 1: Gather Your References

To get the best results, prepare:

A recent photo of yourself (front view, well lit, neutral background).
A reference of your younger self (optional, but helps improve accuracy).

If you don’t have a childhood photo, the model can generate a “plausible younger version” of you by adjusting age parameters.

Step 2: Copy-Paste Prompts

Here are example prompts you can use directly in Gemini 2.5 Flash Image (Nano Banana). Just paste them and upload your photo where indicated.

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Stargazer Prompt

Create a photorealistic portrait combining the provided images: adult version of the subject and baby version of the subject. Place the adult version adjusting a large telescope, muscular physique enhanced, wearing explorer attire. Position the baby version standing naturally beside him with a miniature star chart. Use the exact faces from the supplied photos with no alterations to facial features, hairstyle, or identity. Both should look directly at the viewer. Lighting cinematic with soft starlight and studio-controlled highlights. Ultra-realistic rendering with telescope textures, fabric, and skin detail. 4:5 aspect ratio.

Sculptor Prompt

Create a photorealistic portrait combining the provided images: adult version of the subject and baby version of the subject. Place the adult version shaping a marble sculpture, muscular physique enhanced, wearing simple work attire. Position the baby version seated naturally beside him with miniature clay tools. Keep the exact facial features, hairstyle, and identity exactly the same. Lighting soft cinematic with directional highlights. Ultra-realistic rendering with marble, clay, and skin textures. 4:5 aspect ratio.

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Vintage Explorer Prompt

Create a photorealistic portrait combining the provided images: adult version of the subject and baby version of the subject. Place the adult version in a studio-styled expedition scene, muscular physique enhanced, dressed in explorer gear with backpack and compass in hand. Place the baby version seated on a vintage travel trunk beside him, dressed in a miniature explorer outfit with a small compass, posed naturally. Maintain identical facial resemblance and expressions from the provided photos, with no changes to hairstyle, features, or proportions. Both should look directly at the viewer with curiosity and determination. Lighting soft but cinematic, warm golden tones with directional highlights. Ultra-realistic rendering with detailed fabric textures, leather gear, and flawless skin blending. 4:5 aspect ratio.

Studio Portrait Prompt

Using the provided images (adult and baby), create a Hollywood-style portrait that blends both into one polished, cinematic composition. The adult version should appear seated, with a strong, muscular build, styled in timeless formal attire with subtle glamour lighting. The younger version (baby) should be sitting on the adult’s lap, positioned naturally, both facing the viewer. Ensure the facial features and hair are perfectly matched between the two versions, clearly showing they are the same person at different ages. The scene should be lit with dramatic yet soft cinematic lighting, inspired by Hollywood portrait photography, with smooth skin tones, glossy highlights, and a refined studio backdrop. Ultra-detailed, photorealistic finish, sharp focus on the faces, 4:5 aspect ratio. (high-resolution)

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Champion Boxer Prompt

Using the provided adult and baby photos, create a high-resolution, photorealistic studio portrait of both subjects in a boxing ring. Keep the faces and expressions exactly as in the reference photos with no changes. The adult is shirtless with a muscular physique, wearing realistic satin boxing shorts, while the baby sits on his lap in matching miniature shorts. Adjust skin tone to be flawless and natural. Studio lighting mimics professional ring lights with subtle shadows and highlights. 4:5 aspect ratio.

Blacksmith Portrait Prompt

Create a photorealistic portrait combining the provided images: adult version of the subject and baby version of the subject. Place the adult version hammering on an anvil, muscular physique exaggerated, shirtless with protective apron. Position the baby version naturally standing beside him holding a tiny hammer in miniature apron. Keep the exact facial features, hairstyle, and identity exactly the same. Warm Lighting dramatic with warm forge glow and strong shadows. Smoke, sparks, fire.  Ultra-realistic rendering with metal, fabric, and skin detail. 4:5 aspect ratio.

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Astronaut Duo Prompt

Using the provided adult and baby photos, create a high-resolution, photorealistic studio portrait of both subjects seated inside a spacecraft cockpit. Keep the *faces and expressions exactly as in the reference photos*, with no changes or distortions. The adult is in a realistic NASA/SpaceX-inspired spacesuit, muscular physique visible, while the baby sits naturally on his lap in a tiny matching astronaut suit. Adjust the overall skin tone of both subjects to be flawless, even, and natural under studio lighting, while preserving all facial features. Lighting should mimic professional studio setup with soft, directional illumination, subtle reflections, and highlights matching the cockpit interior. Maintain photorealistic textures for skin, hair, clothing, and environment. 4:5 aspect ratio.

Vintage Strongman Duo Prompt

Create a photorealistic portrait combining the provided images: adult version of the subject and baby version of the subject. Place the adult version lifting a large barbell, muscular physique exaggerated, wearing classic strongman attire. Position the baby version standing naturally beside him with tiny toy dumbbells. Maintain identical facial resemblance and expressions from the provided photos, with no changes to hairstyle, features, or proportions. Both should look directly at the viewer with playful strength. Lighting dramatic with spotlight effects and circus ambience. Ultra-realistic rendering with metal, fabric, and skin detail. 4:5 aspect ratio.

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Gladiator Duo Prompt

Keep the exact facial features, hairstyle, and identity exactly the same. Using the provided adult photo and baby photo of the same person, create a cinematic, ultra-realistic portrait featuring both in the same natural scene. The adult is depicted as a muscled gladiator in authentic ancient Roman armour, holding a gladius, standing confidently on a dramatic battlefield with golden-hour lighting casting dynamic shadows and highlights. The baby version sits or stands naturally beside the adult, blending seamlessly into the environment with soft, harmonious lighting. Emphasise realistic skin textures, muscular definition, natural depth-of-field, and cinematic composition. Capture epic mood, award-winning quality, and cinematic colour grading, 16:9 aspect ratio.

Step 3: Refine with Conversational Edits

If the first result looks off, simply refine:

“Make the younger version 10 years old.”
“Add more resemblance to the adult face.”
“Keep proportions realistic, avoid distortions.”

Nano Banana lets you do this interactively without rewriting the full prompt.

Step 4: Creative Variations

Want more than a simple portrait? Try:

Family-style photo: Both versions of you sitting on a couch.
Formal photo: Suit and tie, graduation gown, or cultural attire.
Fantasy crossover: Younger you as a superhero standing with present-day you.

Final Thoughts

Creating time-hop portraits with Nano Banana (Gemini 2.5 Flash Image) is addictive, fun, and surprisingly easy. Whether you’re exploring nostalgia, making a gift, or just experimenting with AI, the results feel almost magical.

And because I know you’ll want to try this today, I’ve included free copy-paste prompts above to get you started.

👉 If you’re wondering what to do next, drop your questions in the comments and I’ll guide you further. Or better yet, share your generated image in the comments so we can all see how your past meets your present.