My husband purchased this ring master costume, and the large size was relatively true to size. The jacket and vest were not too bad, but the hat and the dickie/bow tie were very cheap quality. Shaun wasn't able to straighten the top hat out so it looked pretty lumpy. Also, seems silly that Target didn't sell the black pants to go along with it...might as well throw it in a charge a bit more.
I bought this costume for my 15 year old son who typically wears between a men's Medium and Large. I bought the Large for him and it was a little big in the vest but otherwise fit great. He has a larger than normal head so the hat did not fit but the costume was still great without it. I would recommend this costume - the dickey, vest, jacket, boot covers were all real sharp once we ironed them. I felt it was worth the cost!