"闺蜜的惊喜"的英文是"surprise from a best friend". "闺蜜"在英文中称为"best friend", "惊喜"则可以翻译为"surprise". 该短语的来源可能是因为得到闺蜜的惊喜感到非常愉悦，所以用了这样的说法。
例句：
I was so happy to receive a surprise from my best friend on my birthday. (我很开心能在我的生日收到闺蜜的惊喜。)
The surprise from my best friend made my day. (闺蜜给我的惊喜让我的一天都变得美好。)
I can't wait to see what surprise my best friend has in store for me. (我迫不及待想看看闺蜜为我准备了什么惊喜。)