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10 April 2012, 12:32 | Updated: 10 April 2012, 12:56
The 'LaserLight' also hung out with 'Don't Wanna Go Home' singer Jason Derulo after her Hollywood gig.
Jessie J says performing her first headlining concert in Los Angeles has left her feeling inspired and "brand new".
"That felt brand new. So inspiring, THANK YOU LA!" Jessie tweeted following her performance. "Oh what I night. I met one of my vocal heroes @BSLADE what an inspiration <3."
Jessie was later pictured at the event alongside American singer B. Slade and 'It Girl' star Jason Derulo, who was still sporting a neck brace following his injury at the start of the year.
Jessie J unveiled the music video for her brand new single 'LaserLight', featuring French DJ and producer David Guetta, over the weekend.
View a picture of Jessie J with Jason Derulo and B.Slade below (Credit: Twitter):