Elsie Hewitt‘s giving more updates about new motherhood … including sharing a glimpse of her tight abs with fans — as well as the adult diaper she’s rocking!

The model shared a selfie Friday … pointing out her unusual undergarment — which many women wear after giving birth to protect against heavy bleeding, urine leakage and other common occurrences.

However, for anyone wondering if she’s opting for the diaper instead of a toilet, Elsie makes it clear she’s not. She’s still running to the ladies room like normal.

As you know … Hewitt gave birth to her first child with Pete Davidson on December 12 — a baby girl they named Scottie Rose Hewitt Davidson.

She’s posted a ton about their little one in the days since … calling her a “perfect thing” in a post she shared to IG last week.