Britney Spears started her residency in Las Vegas with a star studded audience with one particularly enthusiastic front-row member.
Miley Cyrus was caught on camera by fans dancing and singing along with Britney Spears during the opening night of 'Britney Spears: Piece of Me' at Planet Hollywood on Friday night.
The excited starlet even locked lips with her icon's backing dancer when two dancers came into the front row to dance with her.
Instagram user 'itstetrisbish' caught Miley rocking out to Spears' ', completely immersed in the experience.
Britney tweeted Cyrus after the show, thanking her for coming.
Other notable attendees included Katy Perry, Adam Lambert, Mario Lopez and Ivana Milicevic.
Cyrus hosted an aftershow party with new boyfriend Jeff Beacher.