Nope, we'd never heard of it either (maybe it's just us?) but apparently your lips, can be affected during pregnancy - swelling up larger than they were beforehand.
We all know that pregnant ladies can feel like their boobs, bum and obviously, their tum, are completely taking over while they're expecting, but there are some unexpected areas that can also swell up.
Many women, including Kim during her first pregnancy and singer Jessica Simpson, experience 'pregnancy face' where a number of the features seem to swell.
The lips are the things these two stars noticed first, whilst other women have reported their noses appearing bigger and more swollen, too.
This can be the case of the dreaded 'pregnancy nosebleeds' that so many experience, as the blood vessels in the nose swell up which means they are easier to rupture.
Other things that can eperience swelling are veins, your gums, and even your whole face - causing a puffy look overall.
But the important thing is, not to worry, all of these side effects subside post-pregnancy, meaning you shoud get your normal gums/lips/nose/legs back soon enough.