My wife's younger sister has gained about 100 lbs since she got married (probably 5'3 280), and had a kid about a year before we had ours. She used it as an excuse to get fat. My wife, on the other hand, has no time to eat because she's always doing stuff and has therefore gone below her pre-pregnancy weight (5'7, 120ish). The best part is her sister can't blame genetics, THEY HAVE THE SAME FUCKING PARENTS.