I love Hidden Hills but have found that the sizing can vary depending on which wash you order...and also whether they are straight/skinny or bootcut. In the bootcut HH Dusk wash I am a 27, but my white HH bootcuts are 28. My Paige Skyline straight legs are size 28. Since the sizing varies slightly, in my experience, I ordered one pair of 27 and one 28 in the NAS Hidden Hills just to be safe.
Sizing issues aside, these are my absolute favorite jeans EVER! They fit perfectly with no stretching or gaping at the waist. Worth every penny.