I am a size 12 and can fit into most size 12 trousers with some stretch in them/elasticated waist, m and s jeggings, next harem trousers for example but have recently been looking for some black trousers for work (teacher) and even in a size 14 I can’t pull them up over my bottom let alone do them up! I last worked 10 years ago pre kids and could fit into any size 10 trousers back then and now I don’t know what to do! I am a very definite pear shape. Any ideas? Thank you!