Hello all! This is Courtney from Sweeter Than Cupcakes, and I’m here to share my spin on February’s “What’s Underneath” sewing theme. In the process of taking what is normally underneath, in this case my seams, to the outside, I’ve created my favorite workout shirt. The combination of the Rivage Raglan (affiliate link), performance fabric, and flatlock seams kicks this style into the fashionable but highly functional category. Let me walk you through my process of selecting a size and what makes the flatlock seam so special in athletic wear. Get all the details here.