Saif, son of late Indian cricket captain Mansoor Ali Khan Pataudi and actress Sharmila Tagore, married Kareena last year.
The actress says she shares a warm and friendly relation with Soha.
"We do not have that sister-in-law kind of a relation. Our family is very modern. Soha and me can chill, have a drink and talk. We are quite relaxed. Sometimes we talk often and sometimes we don't talk for two months. We are busy with our work, we travel," Kareena told PTI.
Earlier, Soha too had said that her temperament is something that everyone in her family envies.
Though Kareena and Soha don't live in the same house, but whenever they meet they don't talk much about films and work.
"We don't talk about Bollywood films and other actors at all. That is the rule in my house.