A couple months back my mother-in-law dropped off a stack of my husband's old t-shirts including five from his summer as a counselor at Camp Unistar. Joel was going to turn them into rags, but I secretly rescued them from the rag pile and re-purposed them as kid's t-shirts.
I used the Skinny Flashback Tee pattern from Made By Rae. I changed the long sleeves into short sleeves, but otherwise left the pattern unaltered. Size 2T fits Ethan and 5T fits Isaac perfectly.
I used my serger for the shoulder and side seams and then hand-stitched the collar and hems - I think it was actually quicker that way! I've struggled for hours to serge a blind hem, with mediocre results. I used Wonder Clips to fold under and secure the hems, and a doubled length of heavy duty Coats and Clark thread for hand-stitching. It looks like a serged blind hem, but soooo much sturdier! I will be shocked if my kids can rip these hems.
I used a running stitch to attach the collars, being careful not to pull the thread taut. Toddlers have big noggins! I did have to redo one of the 2T collars that I'd stitched too tightly. I used flat seams in the ribbed collar to avoid bulky seam allowances.
I finished these shirts just in time for the kids to wear them on Father's Day.