Yo guys I've been lurking for awhile…don't know why I chose now but I was surprised nobody pointed it out but it's obvious that purin has never met sanji. First off last chapter when we are introduced to her is the same chapter that Big mom asks if sanji has arrived, if he was there for awhile then she would know so he had no time to teach purin about any sweets. Second Purins description of sanji is ripped straight from his bounty poster...the key line is "I hear his legs are black"...she's never seen them she just knows his epitaph is black leg. Third the black silhouette is a indication that she doesn't have a accurate depiction of his full body
more proof that she's lying to them and is setting them up for a trap.