This white bra girl is definitely not Kayla. From all the screen caps I got, looks like SG dude has at least two vids of Kayla. One is where she's in a white shirt at first holding a glass, and later stripped to a black bra and blue panty. The other is like a POV vid where she is in a see-through dress with black collar. Given that these are all that's out there all these years, I wouldn't be surprised there are only two vids of her. Still. really hope they will surface one day.