Peeking out of the bottom of a very large garment bag was what appeared to be the train of a long, feathery, white dress.
Also seen on the tarmac was a worker carrying another garment bag seemed to be a formal suit, possibly a man's tuxedo.
But before we get too excited, sources reveal that Jenner isn't walking down the aisle with Travis Scott, and the sighting may be a publicity stunt, with Jenner knowing that the paparazzi are staking out her every move.
What makes those in the know think this isn't a wedding party?
Jenner boarded the plane with Scott and their baby Stormi, mum Kris Jenner, Scott Disick, Sofia Richie and Corey Gamble, assistant, Victoria, and friends Stassi Karanikolaou and Yris Palmer.
But some key players were missing, notably the other Kardashians Caitlyn, Kim, Kendall, Kourtney, and Khloe.
Kourtney is vacationing in Europe and will join Kylie's party but the absence of the others has raised doubts this is a wedding.
But then again, Scott began the birthday proceedings for his girlfriend of two years by covering the floor of their mansion in red rose petals. In a card he included in a video Jenner posted to Instagram, Scott had written "We're just getting started."
