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21 March 2012, 11:45 | Updated: 21 March 2012, 11:49
The 'Baby' star has praised his "mates" on their fantastic rendition of 'Glad You Came' on the chat series.
The Wanted have been congratulated by teen sensation Justin Bieber for their performance on The Tonight Show With Jay Leno.
The 'Lightning' stars gave a rousing rendition of their hit single 'Glad You Came' which caused a stage invasion when an array of female fans mobbed the band during their set.
The Canadian star took to his Twitter account to say he heard about the show and was keen to watch it.
"@thewantedmusic heard u fools killed it on leno tonight. gonna check it out. well done mates! Ha," he tweeted yesterday (20th March).
The performance was the latest in a series of high profile US TV apperances the British stars have now completed which began earlier this year with their debut on the Ellen DeGeneres Show.