I think in the past they were sneered at, but not any more. Most fitness types prefer elasticated waists. I think it depends on the style of trousers (and skirts as well for that matter).
I have some very nice linen trousers, sold for all ages, which have an elasticated waist - not that you would know unless you looked closely. From Fat Face. I also have a couple of Seasalt maxi skirts with elasticated waists which are also popular.
It depends how well they are made.
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. Maybe I meant 'outline'? I don't usually write about fashion
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