YOU SAID:

the banana was wearing underwear outside it's pajamas

INTO JAPANESE

バナナはパジャマの外で下着を着ていた

BACK INTO ENGLISH

Banana wore underwear outside her pajamas.

INTO JAPANESE

バナナはパジャマの外で下着を着ていた。

BACK INTO ENGLISH

Banana wore underwear outside her pyjamas.

INTO JAPANESE

バナナはパジャマの外で下着を着ていた。

BACK INTO ENGLISH

Banana wore underwear outside her pyjamas.