This is the back of a Green Bay Packer Jersey with my son's first name and it was for his 3rd birthday. I thought it would be better if I did it for his fourth birthday (Brett Favre's number) but I am sure my husband would not have found that as humorous. It is butter cream frosting and I used two sizes of star tips. I didn't make the neckline quite the same as a real jersey because I was copying my son's size 3T play jersey which only has a yellow neckline (instead of the white and yellow stripe that the real jersey's have).