Miley Cyrus and Kaitlynn Carter are DONE! I mean, we all know Kait was a rebound relationship for Miley after splitting from hubby Liam Hemsworth so it's not that surprising. Question is now ... will Miley regret her decision to split from longtime love Liam and will she beg from him to come back?!

Miley performed at the iHeartRadio concert in Las Vegas Saturday night, accompanied by her mom Tish, while ex Kaitlynn posted to her Instagram Story, a video of her laying on her couch at home, wearing fuzzy slippers. Typical breakup position!

So will Miley go back to Liam? Will Kaitlynn try to win back ex Brody Jenner (even though he's been dating Jose Conseco's daughter Josie)?