One size fits all? Really? YES!!!  oh my god these are the softest leggings I have ever felt in my life. I ordered them in three colors and want to buy every single one. I cannot believe how great they look on! I am 5'8" and 145 lbs. They are the perfect length. They are super high waisted and just suck everything in. I look so tiny in these leggings with a flat stomach.... it's unbelievable. My husband was like holy cow when he saw me in them! You won't regret one thing buying these!!  Oh and they look great with the Niashot Short Sleeve V-Neck Loose Casual Tee T-shirt on Amazon!!