Why do some women have such small bumps?

I always google images of women who are as far along as I am. Like if I am 27 weeks, I would look for pictures of women who are also 27 weeks. But man some of the women have such tiny bumps even toward the end of their second trimester. If you try googling you'll know what I mean. It's mind blowing. I don't understand why these women barely show this late in their pregnancies. I thought the baby was the size of a cauliflower? Where's the cauliflower hidden at?