Check out this pattern from Berroco, for the Eastman t-shirt. So springy and fiiiiiinally we have the weather for shorter sleeves! I like the flattering A-line shape and interesting textured stitch pattern, and I'd probably make the sleeves a little longer (just above the elbow).
It’s written for a cotton/cashmere blend made by Berroco, which is intriguing -- probably the closest thing I’ve ever knit with is a cotton/wool blend from Rowan, which gets some elasticity from the wool content. You could probably substitute a different yarn, but I’d stick to a cotton or linen blend (not 100% cotton), as without some other fibre in there cotton itself tends to droop.
Images by Berroco