I find I have got a little smaller.But I don’t want to buy new clothes.I have come up with some ideas for trousers that are too big
1.Give away
2/Save them till winter when you can wear them over some leggings or wool tights.Of course that may make us look fatter!
3 Wear them in freezing weather over another pair of trousers and start a new trend.We had a two shirt fashion once so why not two pairs of trousers?But don’t do this unless they are soft as it will hurt you
4. Look on you tube to see ways of taking in the waist.
5 Have them altered but if that is very expensive it may not be worth it.
6.Gain weight!
7 Give them away. Ths is maybe better than saving them in case you get larger.
8 If they have belt loops you can cinch them in
9. Wear them at home only ,in case they fall off.
10.Glue them on
How my heart sings 
I’m sure you’ll find a way….apart from getting smaller, thinner or overweight…..;) Hugs!
I sewed a little of the waistband in