Don’t look at me like that; I can too make clothes that aren’t sci-fi related. ;)
I’ve always liked the trousers on the female landlord in Apartment Life, but I couldn’t find them as separates anywhere. (I think I know why – the UV map wasn’t very separation-friendly.) So I separated them and turned them into untuckable bottoms for AF and EF.
The trousers have been decustomized, so they don’t have a CC star and you will find them back with the Maxis clothes. They are still base-game compatible, though – they do not require Apartment Life (or any other expansion).
For AF, the trousers have two variations, low waist (seen above) and high waist. The ones with a high waist are good in case you e.g. want to use a Maxis top, but don’t want your Sim to show skin; the ones with a low waist work great with untuckable tops – or with Maxis tops if you do want your Sim to show some skin. :P They have fat and preg morphs.
The trousers for EF only have a high waist, and for obvious reasons they also only have a fat morph. They are texture-linked to the AF high waist trousers, so these are needed in game for the EF trousers to display properly.