The person appears to be a/an Middle Eastern Male, approximately 10 to 19 years old.
For a formal summer party, a Middle Eastern male teenager should consider wearing a light-colored, breathable long-sleeve shirt, paired with tailored trousers or chinos in a complementary color. A lightweight blazer can add sophistication, and loafers or dress shoes in a neutral tone would complete the look. Accessories like a stylish watch or a traditional keffiyeh can add a cultural touch while maintaining formality.
For a formal summer party, a Middle Eastern man should consider wearing a lightweight, breathable white linen shirt, a tailored navy blue blazer, light-colored dress trousers, and stylish leather loafers. Accessories like a silk pocket square and a classic watch can enhance the look. It's also advisable to consider cultural influences, such as incorporating traditional patterns or fabrics subtly into the outfit.