I thought I'd do a t-shirt cake for my son. Got everything out and started mixing the batter. Looked at my 9x13 pan a just realized it might be harded than I thought. Anyone have a picture of a t-shirt cake???
Wilton used to make a pan for this...but it's not that hard. Just look for a picture of a tee shirt online (google it). and draw out a sketch so that you'll know how to cut the cake. A tee shirt is very easy...use a ruler when you cut...it may be helpful to use wax paper or parchment paper to make a template of check out the templates on this site.
I hope this helps.
I have the tshirt pan, but made the Transformer one in my photos with a 9x13. I cut off about a 4" strip off the top, to make the sleeves. Maybe that will help a little.
Edited to add. I just went and looked at the cake photo, and realize I must have made two 9x13's in order to have sections for the sleeves, and then I cut that 9x4 (or maybe 5") piece in half at an angle for the sleeves.
I probably ate the other part of the cake myself, it was chocolate
Here is the link to the t-shirt cake I made. It is in my gallery. I just baked two 9x13 and cut the sleeves out of the second one, and covered everything in fondant. Had some leftovers...yummy...for cake balls...HTH