I finished this smocked t-shirt yesterday. It is for my Etsy shop. I made it in a 4T. The smocking plate came from a past issue of Sew Beautiful. I used rick rack instead of piping when inserting the smocking into the t-shirt.
As always, my favorite part was definitely the smocking. I could picture smock for hours. The construction is always my least favorite part but at least with adding inserts to t-shirts, the construction is minimal.