本片是一部韩国爱情片，上映于2019-12-23，由Lee Dong·Joon导演，由成燕/Seo Bo·ra/全海日主演。
剧情简介：Jang-soo and Seong-yeon have been married for about 10 years, but they have an unspeakable secret; Jang-soo's brother, Jae-cheol. Jae-cheol used to go out with Seong-yeon before she met Jang-soo. And although Jang-soo couldn't help but marry Seong-yeon knowing her past, he himself had a young girlfriend named Eun-hye... Jae-cheol was getting along fine with Eun-hye when one day she breaks up with him. The love story between two brothers in "Big Breasted Sister-In-Law" will soon come out.
外文名：가슴 큰 형수
类型：爱情
地区：韩国
导演：Lee Dong·Joon
演员：成燕 / Seo Bo·ra / 全海日 / 闵度允
