The Swifties are buzzing with theories today, and this time it includes a BFF of Taylor's. Selena Gomez posted some photos to her Instagram last night featuring her old friend and her cat, Benjamin Button, and obviously fans think it's a clue. One pointed out that Gomez's caption has 18 letters, the same number of days (as of yesterday) until Swift releases "Fearless (Taylor's Version)" on April 9. (Normally, we'd say this is a reach, but the letter thing is something Swift has employed in the past to drop her hints.) Gomez also named one of the lip colors in her Rare Beauty line "Fearless." As a result, fans are thinking Gomez may be featured on the one of the six never-before-released songs that Swift revealed will be included on the album. The two singers go way back, so it's not out of the realm of possibility that they've collaborated at some point. Match all the photos of this pretty pair!