Has anyone else suddenly got thinner lips?

I don’t know if this is a postpartum hormone thing or just sudden aging (33F), but I looked in the mirror this evening and my bottom lip is suddenly considerably thinner! I can still faintly see where the original lip shape is but the actual pink pigmentation doesn’t fill out to where it used to looks like 30% thinner. It’s not a blurry edge either - it’s a very clear sharp edge to the whole bottom lip.

I’m not against thin lips, it’s just bizarre and I don’t quite look like myself. That along with the tired sagging wrinkly skin (thank you postpartum) I look like I’m shrivelling up haha.

Has anyone else had this?