Kate Hudson is currently pregnant with her third baby and has been sharing photos of her growing belly on Instagram since announcing her pregnancy earlier this year. The latest addition is a post debuting the new shape of her belly button. Yes, her belly button.
In the cute pic, Hudson is draped in an orange robe with her very pregnant tummy front and center. Her formerly innie belly button is popped out. "#Outie," she captioned the photo, followed by an emoji of a pregnant lady and a smiley face.
While Hudson's Hollywood status does set her apart from some moms-to-be, her suddenly outie belly button isn't so rare.
"It's very common and completely normal" for a woman's belly button to become an outie during pregnancy, Christine Greves, M.D., a board-certified ob/gyn at the Winnie Palmer Hospital for Women and Babies, previously told SELF.
“When a woman is pregnant, the uterus gets bigger, and it has to go somewhere, so the fascia in our abdomen stretches,” Dr. Greves says. And because the belly button tissue is already a little weaker, “it’s going to stretch out even more so.” The pressure of the expanding uterus can push the belly button outward. “It’s like if you have a pair of jeans with a hole on them and you patch it up,” Dr. Greves explains. “Then if you put tons of weight or force there, that patch is more likely to open up [than another place].”
According to Dr. Greves, it usually happens in the second or third trimester—which is right where Hudson appears to be. The actor announced that she was expecting a child with boyfriend Danny Fujikawa this past April with a sweet video on Instagram.