Kylie Jenner! Yup!

Justin Bieber was in Las Vegas for the big fight and to support his friend Floyd Mayweather. Floyd won, and Bieber Instagrammed a pic of him and Kylie Jenner, tagging her in the photo!

Sources say that Justin & Kylie hung out inside the Hard Rock Hotel. If you remember, Kylie was hanging out with Selena just weeks ago at Coachella so I wonder how this makes Selena feel!!