Naomi Watanabe, Comedian, plus size model and owner of Punyus clothes brand being her happy self!
This is a Japanese plus size brand called Palemoba (yes, she looks thin for western standards but she is, in fact, a plus-size model in Japan) you can find big sizes in their store, I don’t know if their big sizes are equivalent to US/UK sizes, but you can check the measurements if you’re interested in buying.