When is it ok to start wearing maternity clothes?

I am size 8(uk) and 14 weeks pregnant. my clothes are tight now and my bump is noticable as i am so slim. this is my second child. would it be ok to start wearing maternity clothes or would people think it was a bit eager and silly? also i cannot wear a size up for now as my legs and body are thin so e ting would be baggy apart from at the tummy. and i have to wear jeans and fitted tops, i would not be able to walk around in sweatpants and mens clothes.
Answer
It is different for e person. start to wear them when you think you nrrd to start wearing them.