Coco Austin’s baby bump is FOREVER changing its size

We just can't get to grips with Coco Austin's baby bump.

The model was only snapped last week with the smallest baby bump ever, but over the past few days she was captured again, showing a very sizable bump.

Sporting pink and black gym gear, the glamour girl seems to be still hitting the gym while pregnant. 

In her third trimester, the 36-year-old still looks pretty small, compared to her friend in the picture. 

We don't know what's happening with Coco's uterus, but whatever it is, she is looking unfairly fabulous.

Pregnancy sure is mysterious!