Music
The sibling duo, whose new single 'Shine On Forever (Photo Frame)' is out this week, performed at London's G-A-Y club on Monday.
At the end of their set, Smith was seen removing his clothes - bar his sweatband - and held his underwear up to the audience.
He also bared all in a recent photoshoot to raise awareness for testicular cancer.
'Shine On Forever (Photo Frame)' is currently outside the top 40 in the midweek chart.
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