YOU SAID:

People in pizza slice costumes becoming pizzas

INTO JAPANESE

ピザスライスの衣装を着た人々がピザになります

BACK INTO ENGLISH

People wearing pizza slice costumes become pizza

INTO JAPANESE

ピザのスライスの衣装を着た人はピザになります

BACK INTO ENGLISH

Anyone in a pizza slice costume will be a pizza

INTO JAPANESE

ピザスライスの衣装を着た人は誰でもピザになります

BACK INTO ENGLISH

Anyone wearing a pizza slice costume will be a pizza

INTO JAPANESE

ピザのスライスコスチュームを着ている人は誰でもピザになります

BACK INTO ENGLISH

Anyone wearing a pizza slice costume will be a pizza