Plus your size has very little to do with baby size . I ' m the container . I ' m the baby container . Maybe my baby likes it roomy . I gained so much weight . It was all boobs and uterine fluid and blood volume and whatnot . Baby was average sized . I went back to pretty much normal almost immediately . <| sep |> Yeeargh , matie ! Plunder much booty <| sep |> Actually , science has shown that gluteofemoral fat aka big booties are a critical storage location for longchain fatty acids that are an important factor in neonatal brain development . ELI 5 Ladies with a lil ' extra junk in the trunk are more likely to make milk that is extranourishing for baby brains . Sir Mixalot was decades ahead of his time . He really just wanted to select for women most likely to give him intelligent children .