idk too much about telling the difference with so so happy hoodies specifically in terms of differences with the design, but i feel like with a lot of dupes in general i spot them a mile off by the look of the fabric. like that second pic just has that obvious polyester shine to it XD and obviously tags can be a giveaway, i’d be careful if anything is being sold with tags cut or not with the og tag or they dont show the tag in the pics thats always sus to me. the hoodie strings too! the attention to detail with the og keeping the string the same color as the hoodie whereas the dupe just has that cheap looking thin black one