Here is a public health style warning. The look of wearing leggings is very in at the moment. If you are not going to wear a long top/dress over them then please take care with these and ensure that the material is sufficuently thick enough that when stretched over your arse it does not become transparent.
One poor woman I saw yesterday morning had not checked for arse transparency, so while the outfit was fine from the front - from the back was see through and her pants visable to all.