Most of you must have done it for Navratri and other occasions and hence, there’s no reason why you shouldn’t do the same for Diwali. The Google Gemini Nano Banana trend, which went viral, continues to keep people interested with new tricks for image generation. On the occasion of Diwali, Google encourages people to go wild with AI-generated versions of their favourite festive photo with new prompts to get the most out of the Nano Banana model.
For those who wonder, Nano Banana is the name assigned by Google to the Gemini 2.5 Flash Image model – a new AI model that promises to be better at working with photos and generating photorealistic edits as well as versions.
With elaborate Nano Banana prompts, you can generate stunning, cinematic Diwali portraits and greetings from a simple selfie. This trend transforms ordinary photos into hyper-realistic festive masterpieces, complete with traditional attire, elaborate rangoli backgrounds, and the warm, golden glow of diyas.
Here is a step-by-step guide on how to use the Gemini AI feature to create your own personalised, high-definition festive portraits for Diwali 2025.
Step-by-Step guide to generating AI Diwali portrait
The process of creating a spectacular AI portrait is surprisingly straightforward, requiring only the Google Gemini app or website and a high-resolution selfie.
1. Access the Gemini AI platform
Mobile users: Download the Google Gemini app from the Google Play Store or Apple App Store and log in with your Google account.
Web users: Navigate to the official Google Gemini AI platform in your browser.
2. Upload your base photo:
In the Gemini chat interface, select the option to upload an image. Choose a clear, high-resolution selfie or portrait photo of yourself that you wish to transform. Note that this is the foundation that Gemini will work on, enhancing with AI tricks while ensuring your facial likeness is preserved.
3. Craft your creative prompt:
This is the most important step. The AI works based on the descriptive text you provide. To achieve that viral, cinematic look, your prompt must be detailed, specifying the scene, attire, lighting, and ambiance.
Specify that the person in the uploaded photo should be dressed in traditional clothes (e.g., “royal blue lehenga with intricate silver embroidery,” “elegant silk saree with gold accents,” or “stylish boy in ethnic kurta”). Include specific Diwali symbols and the setting (e.g., “kneeling to light a diya within a circular rangoli,” “standing on a balcony with marigold garlands,” “surrounded by flickering oil lamps,” or “holding a sparkling firecracker”). To achieve a professional, cinematic look, use descriptive terms for lighting and quality (e.g., “warm golden light,” “cinematic 4K ultra-realistic portrait,” “soft bokeh background,” or “90s retro film grain effect”).
For example, you can try this prompt shared by Google: “Create an image on a fairy-lit rooftop: me in red lehenga, dad in cream kurta with maroon jacket, mom in golden saree, sparklers, diyas, ‘Happy Diwali’ written in gold.”
4. Generate and refine the image:
Once your detailed prompt is ready, hit the send or generate button. Within seconds, Gemini’s advanced image generation model will process the request and deliver the output image.
If the result isn’t perfect, you can refine your prompt with follow-up instructions (e.g., “make the outfit more vibrant,” or “add more fireworks in the background”) to guide the AI until you achieve the desired festive look.
5. Download and share:
Once satisfied with your AI-generated Diwali portrait, you can download the high-resolution image directly. These visually arresting images are perfect for digital greetings, using as social media profile pictures, or sharing with friends and family during the festive season.
