I was a size 12 prior to getting pregnant and I ordered the XL. I'm 5'9", currently at 35 weeks, and I have gained 35 pounds in my pregnancy. But for context, I have been wearing size Large and XL clothing in Target's maternity clothes, so I was expecting these to be comparable to their sizing. These jeans didn't even come CLOSE to fitting properly. They do have a lot of stretch, but they were very tight around my legs and I couldn't even pull them up enough for them to sit on my hips properly. And, the belly band didn't even hit my belly button it was so small. LOL Do not waste your money.