Why does Kate Middleton's bump look bigger with her third pregnancy?

Kate Middleton is expecting baby number three, and after 2 previous pregnancies and births, she is a pro and apparently, her body knows better what to do the third time around.

The 36-year-old mother is eight months into her third pregnancy, and while she looks amazing, some have noticed that her baby bump looks a little bit bigger this time.

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According to Aly Dilks, Clinical Director at The Women's Health Clinic, it’s not our imaginations that her bump does look bigger with this pregnancy and it’s all because of biology. Dilks told the Dailymail: "Essentially, each pregnancy will have its own differences and similarities but we do expect ladies to have bigger babies the more children they have."

She continued: "During your first pregnancy the body uses hormones to make changes to accommodate the baby."

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On the second baby, your body has already changed and your ribcage has widened making the bump appear more quickly. You mean, the ribcage never goes back to normal? And by the third baby, she says it’s just muscle memory and the body knows just what to do for the baby.

Which means wearing the dreaded maternity clothes for a longer period of time, but I guess when you are a princess and have unlimited maternity fashion options, it’s not a big deal.