In a perfectly beautiful dress - singer Katy Perry has been banned from Sesame Street. After You Tube viewers saw the recorded segment before airing it, viewers complained to PBS.
Quote from Sesame Street per
http://www.mediaite.com/...
"Sesame Street has a long history of working with celebrities across all genres, including athletes, actors, musicians and artists. Sesame Street has always been written on two levels, for the child and adult. We use parodies and celebrity segments to interest adults in the show because we know that a child learns best when co-viewing with a parent or care-giver. We also value our viewer’s opinions and particularly those of parents. In light of the feedback we’ve received on the Katy Perry music video which was released on You Tube only, we have decided we will not air the segment on the television broadcast of Sesame Street, which is aimed at preschoolers. Katy Perry fans will still be able to view the video on You Tube."
Here is the video- Judge for yourself how vulgar it is
as you can see there is absolutely nothing that needs to be hidden from pre-schoolers, in fact the clip looks kinda funny.