This H&M shirt is beautiful and it’s a good transition garment, most of all if you like off-shoulder tops and you’re not into classic shirts (like me).
The habit of being creative with the shirt, wearing it backwards, or knotted on the hips (which led to the all those knotted dresses and tops so popular last summer) started few seasons ago and I really like it.
This cotton shirt has the buttons on one shoulder, an asymmetrical neckline, tapered sleeves with wide cuffs. Its round hem allows to wear it untucked on jeans, pants and even leggings, since it’s a bit longer on the back.
I wouldn’t style it with a wide belt; I’d choose a thinner one, in neutral leather, or an elastic (colorful) belt like this one.