From Sew Me Something:
The Regan top is a casual fitting sweatshirt top. Sleeves that fall straight from the shoulder give a slimline silhouette. The slightly tapered body has no dart shaping to make it easy to make up in knit fabric.
Version 1 has full length sleeves and is finished with a rib or knit fabric neckband , cuffs and waistband.
Version 2 has short sleeves with a deeper cuff finishing at the elbow. The body is slightly shorter but with a deeper waistband to give a more fitted silhouette.