These were easy and fun to make and my bridesmaids loved them! The girls wore their shirts while we all got ready for the wedding together, which made for fun photos. I bought white, cotton, v-neck t-shirts at Old Navy and found all the below shown supplies at a craft store.
1.) Wash and dry the t-shirts before sewing to ensure the fabric won't pull weird around the stitching later on.
2.) Cut a piece of jersey knit fabric and place behind the area you're going to stitch. Place the knitting circle over the area, ensuring the fabric is taunt.
3.) Use a pencil to lightly stencil on the letter or design you want to stitch on to the shirt.
4.) Thread needle, tie a knot at the end of the thread.
5.) Start stitching from the inside of the shirt. Keep even stitch lengths. I recommend using a stitch that loops back on the inside of the shirt instead of just going in and out. This gives more support to the fabric and prevents any weird pulling on the fabric. If that doesn't make sense think about it like this - You know you're doing it right when you can see the full letter from the inside of the fabric just like on the front.
6.) Tie off the end of the thread on the inside of the shirt and remove the hoop.