I was a bit skeptic to order this since some reviews since sizing for my son who decided to sprout the past couple weeks but i ordered a 3T/4T with the intent of putting clothes under it because it starts to get chilly. (who wants a tight fitted cookie costume anyway). The picture is a well representation of the product. My son is wearing 2T bottoms and 2T/3T tops and this 3T/4T fit him wonderfully.  I have no complaints about the costume!! Loved the product!

Quality: great.  It is good for cool weather because it is warm.  I was perfectly comfortable knowing that he was warm (he wore a tshirt & shorts under).  It is durable and well made.

Side note:  My son is a dual special needs son and it is often difficult to get him to do certain things.  I totally got him excited about it.  Explain the costume and how it will fit.  He helped me open the box and with much anticipation was very excited that he wanted to put it on right away. This was his first Halloween where he was well aware of what was going on and to me that was well worth the money any day.