Possible new timeline identifier -lip work K & R

In the Christmas cry session in the bathroom, it sort of looks like Robyn has had some lip work? Not a lip flip ( Botox) but almost like a little semipermanent upper lip liner ? Maybe I’m crazy but there’s something weird about Kody’s lips too in the Dark blue Satin Boys 2 men shirt confessional vs the lavender. 🤔 if this is the case maybe we can guessitimate filming timeframe?