Thanks, Tim.
As i said, I think she could be a 1990 version of Anastasia but Mr Bean's Little Imp in Yellow Swimsuit probably has a lot of explaining to do about having Beans swim trunks. TV Tropes calls it "Gone Swimming, Clothes Stolen".
That's common in a lot of shows. But, yeah, I wouldn't like to be Little Imp in Yellow Swimsuit a few minutes after Act One of that episode is over.
That swimsuit reminds me how little people thought about the dangers of skin cancer just 29 years ago.