Sims 4 neck glitch clipping issue

So I just aged up my sim from a child to teen - it was their birthday and I aged them up with a birthday cake. When going to change their outfit in create a sim I noticed that in sleepwear and only sleepwear is their neck really oddly clipped around the jaw and certain facial features - such as eye shape, are different to how the sim actually looks in other outfits. I’m hoping the attached image will make sense as to what I mean. This has never happened before and I did enter cas through ‘Modify in Cas’ and not at a dresser with full edit mode enabled. However my game is up to date as are all the mods I have installed and I have no broken cc either , even when taking off all clothing and hair and accessories, aging the sim up and then back down again and vice versa and trying to change head shape does this problem remain. Has anyone ever seen anything like this before or could potentially know the problem, if more details of the game and mods I have are needed I’m more than happy to provide them- but I have played with cc and mods for a while and this has never occurred.