你可以说："My pttle brother is really handsome." 或者 "My younger brother is really handsome."
"Handsome" 在这里是形容词，意思是 "美观的，漂亮的"。这个词来自中世纪英语中的 "handsome"，最初指的是 "健康的，强壮的"，后来演变为现在的意思。
一些英文例句和中文翻译如下：
"My husband is so handsome, I can't stop looking at him." (我的丈夫真帅，我看不腻他。)
"She has a thing for handsome men with dark hair." (她喜欢有黑头发的帅哥。)
"His smile is so handsome, it always makes me feel better." (他的笑容真帅，总能让我感觉好些。)