Maternity linen trousers from Mama-licious Maternity, great for the weekend or as casual maternity wear. In cream latte, these are a cream colour, with a hint of light beige to them, but these cheap pregnancy trousers also come in a range of different colours, including black and a stone colour, and feature an elasticated waistband with drawstring, ensuring a great fit under bump, useful for pregnancy wear at the beginning, right through to the full 9 months.The joy of these maternity trousers is that you can then pull them in smaller once the baby is born for those several weeks it takes to get your figure back, just what you need to make your maternity clothing go a little bit futher. Priced at an amazing £23, we think that these are the cheapest maternity clothes you'll find in the UK.