Jessie J: The Roxy with The Wanted!

Jessie J wears her support for Mario and Luigi from the Super Mario Bros., in Los Angeles on Monday evening (April 9).

Earlier in the evening, the 24-year-old singer performed at The Roxy Theatre. Showing her support in the audience were fellow Brits, boy band The Wanted. The lads gave Jessie a shout-out on Twitter, “At the Roxy to support our girl @jessiejofficial. Can’t wait to see her kill it!”

And kill it she did. Jessie tweeted that night: “That felt brand new. So inspiring, THANK YOU LA!”

Jessie also just premiered the “Laserlight” video, her second collaboration with David Guetta. The track is the final single off her debut album, Who You Are .