Most girls do look their best around 23 bc thats when they are biologically the most fertile. As fertility drops so do looks, big fuck you by nature and payback for all the years the pretty ones treated guys like shit.
Once they hit 30, at least white girls age fast like bananas. I saw a college friend who was 9/10 hot at 22 when I knew her at the airport recently after many years. This white girl was still slender but her face aged so much I was like OMG, wouldnt even give you a second look. White girls also drink and smoke more it ages them so much faster as well.