Instead of just focusing on "beautiful," consider using words that describe a person's personality, character, or spirit:
Positive Traits:
* Charming
* Radiant
* Captivating
* Elegant
* Graceful
* Witty
* Kind
* Compassionate
* Strong
* Inspiring
More specific words:
* Gorgeous
* Stunning
* Lovely
* Pretty
* Delightful
* Magnificent
Remember, the best way to describe someone is to focus on their unique qualities and individuality.