In French, you say “Je suis belle” if you are a woman, or “Je suis beau” if you are a man. The word “belle” is the feminine form of beautiful, while “beau” is the masculine form.
It’s interesting to note that the French language has gendered nouns and adjectives, which means that many words change depending on whether they refer to a male or female. So, if a woman wants to express her beauty, she would use “belle,” whereas a man would use “beau”. This distinction is central to understanding how adjectives work in French.