London, Aug 26 - Teen superstar Miley Cyrus has sparked rumours she's back with her ex-boyfriend Carter Jenkins after the two were spotted at a rock band Kings of Leon concert in Los Angeles during the weekend.

Jenkins, who briefly dated the teen sensation in between boyfriends Nick Jonas and model-singer Justin Gaston, blogged about his night out with Cyrus on social-networking website Twitter.com and wrote: 'Awesome show & very fun night with MiCy@mileycyrus,' reports contactmusic.com.

Cyrus and the actor, who is currently shooting romantic comedy 'Valentine's Day' with the singer's friend Taylor Swift, joined Justin Timberlake and Jessica Biel in the technician's booth at the Forum concert. The foursome also attended the backstage VIP party after the show.