AE distressed jeans

bought these on posh & they're too big although I always wear a size three.. I'm so confused guys! I have sizes 00-3 in hollister and literally can wear certain sizes for certain jeans. Help! Lol anyhow, this is 2nd pair I've bought that were entirely too bjg. Anyhow, these are gorgeous pants, but my legs are completely small for them, as I have no curves lol. I love this jeans. They're adorable, & I love the color but you prob know how to shop 4 jeans so they'll look great on you :)