Do Sims get fat after pregnancy?

They do. I had an hour glass figure Sim- beautiful as ever. (Maybe I should pic her?) anywho- I made her my tester Sim. I named her Elsa and she was to have as many babies as she could and not work out (no jogging, exercising, anything) until she had a girl. Originally I did not have a rule about exercising, it wasn't until after the second son was born, that I noticed she was definitively bigger-so I wouldn't let her exercise, I wanted to see if it was my eyes playing tricks on me. It wasn't. But I had boys up until I played with her. The first baby was OK- it was a boy. The second baby was a boy too-After that baby was born-she was waay bigger. By the third pregnancy- she was a straight blob. No more curves- her butt was a double wide trailer. And after the babies were born, she still looked pregnant! I might try the experiment again with foods, to see if there is a "sway method" to it as well. The third pregnancy was twin girls. THANK the Sim gods, because she looked like she was about to explode out of her clothes. Now- also this is my 2nd Sim who had a baby. I had another Sim (my legacy starter) who gave birth to 3 sons before her and never gained a pound. Ate all the same food... BUT I had her jogging daily. I restricted Elsa from jogging until she had her daughters- as soon as she started (within 3 days) she was right back down to her original weight. Best way to go I think- get a bunch of women and one man- who loves women. impregnate all of them- have the social worker take the babies- There might be a sway method involved with salad and eggs (just throwing it out there) I am getting bored with the game now- so I am thinking about giving it a go. But I definitely noticed a change with the Sim bodies after pregnancy.