So I just have a brother and we’re 4 years apart. For those girls out there with sisters close in age (up to two years apart) what’s your relationship like with one another? I have a daughter and a second one on the way. They’ll be 18 months apart. I’m hoping they’ll be like best friends but would like to see if that’s as common as I think it is or if it’s more likely they’ll be feuding lol. I’ve been getting told it’s going to be like world war 3 in my house.