slumber party

1. N-COUNT A slumber party is an occasion when a group of young friends spend the night together at the home of one of the group. (一群年輕人在其中一位家裡過夜的) 睡衣晚會[美國英語]

I'm having a slumber party for my birthday. 我正在爲我的生日擧辦睡衣晚會。