I bought these leggings midway through my second trimester, and I've been wearing them non stop.
I am really happy with the quality of the fabric and the garment is holding up well to lots of wear.
I found the waistband to be a little loose at first, and still... but I don't mind that since I can't stand the feeling of tight waistbands around my belly these days. I'd say these fit true to size, or perhaps run slightly large.
The quality of these leggings is great, but the fit from the hips up is just strange. They do not fit like maternity leggings should. They go straight up from the hip to the bump, leaving a bubble or air pocket in between hips and belly... all other maternity leggings I have hug the curves. Because of this fit, I am constantly pulling these leggings up. I bought my true size(L). I'm not sure sizing down would help.
Love these leggings. High waisted and very stretchy. A must-have basic.