My sister-in-law and I had our first kids a week apart. By the time I gained 25, she had gained like 47...no joke. I just had my 2nd kid the same time you did, have lost the weight, yet she still has "baby weight" from the first,  lol. Its so funny, I knew it would happen too. We fucking hate each other, but have to be cordial for their parent's sake. Every time I'm over there though, she won't talk to me or will barely be in the same room (which is nice). About a year after my 1st, my shitlordy brother-in-law asked "why the fuck [she] still looked pregnant, you had the kid a year ago?!" I fucking laughed so hard.