During the clue package, the imagery shared alongside views of the Black Widow’s costume features tarot cards. That’s So Raven revolved around Raven’s ability to predict the future, so this could be a huge clue. Further, the comment about leaving audiences hanging “by a thread” could be an overt reference to Raven’s career as a fashion designer in the same show. 

“America, you can guess my identity all you want, but I’m going to leave you hanging by a thread until the very end.”

Fans are also looking further than the clues given by the Black Widow herself and considering the character’s body type. They believe the Widow has a figure similar to that of Raven, which may not be too far off, but you’ve also got to consider the fact that characters can add padding to individuals’ identities, too. It could be a way to offer audiences a red herring.