This looks like a casual, short-sleeved white t-shirt with a tie-dye or marbled pattern in shades of grey or light blue, giving it a somewhat distressed or faded look. It features bold black text on the front that reads, "I LIKE TO BE ON TOP".
A silver-colored chain necklace is draped over the collar of the t-shirt, suggesting it might be an accessory that comes with the shirt, or perhaps it's styled for the photo. There's also a small, bright green tag visible on the lower right side, which could be a brand tag or a size tag.
Overall, it appears to be a trendy, relaxed fit t-shirt, likely designed for everyday wear.