Huh. It looks like it won’t load directly, so I’ll just tell y’all what you’ll see if you click the link. It’s a picture of Sean Astin wearing his Twoflower costume from The Color of Magic.
Unfortunately, Try as I might, I can NOT find it for sale. So I’m reduced to whining about it here.
Yabbut, throughout the entire program, his shirt is always immaculate, never a stain, never a wrinkle, never a speck of dust. I figure the costume department must have had dozens of them to manage that.
Maybe I’ll try to find out who represents him, and start a search from there.
ETA: (@Beckdawreck) I don’t know what Google lensed means.
That’s because it’s for a movie that came out almost 20 years ago, was made-for-TV, received mediocre reviews, and isn’t particularly well-known. You’re unlikely to find anyone bothering to make a replica.
One thing to notice is that it’s something of a retro style. If you want to find something similar, look up a shirt with “hippie flowers” or a 60s/70s Hawaiian style. This is kind of close (but probably not close enough to satisfy):
It means she used Google Lens, which is Google for images. Right-click on the picture and you should have the option - it may just be in Chrome though.