would like to size up but out of stock, lovely trousers comfy

These look amazing and are very well made! I thought they would be thicker but they are a nice light material. Really comfortable and stylish. The only issue is the sizing - I am having real problems with Adidas lately. I am a size 14 - 16 usually so got these in a 16 - 18 as some reviews said to size up. The legs fit well due to the oversized style, but the waist is just too tight. These are also quite long, which works for me, but might not suit if you're on the shorter side.