I rely so heavily on reviews. So, for others struggling with sizing on these- I’ll be as helpful as I can. The men’s shirt is a Gildan brand and the ladie’s LAT (live and tell). My fiancé is generally a large and the Large fit him just fine. I’m quite a curvy girl and have a 38DD chest and I carry my weight in my midsection. I’m a 16/18 pants size and in most shirts from old navy, torrid etc I go between a 1x-2x. I got the 2x in this and it fits perfectly. I’m not tugging at it wishing I had more room, but it’s not baggy either. In the photo I do have on a sports bra and us girls know that they "minimize” the chest, but it shows the chest room you’d have otherwise. I’d say this fits like a man’s large since side by side they are nearly the same width. They ARE 2 different shades of black, but they aren’t the same brand shirt either. It’s not tacky or clashing, but not noticeable enough to shy me away.