The chart-topping sister trio also appeared in an 1980's themed sketch on the comedy show
The chart-topping acts played 'Strong Enough' together last night at the Roseland Ballroom
The independent record shop chart will now feature weekly in NME
Meanwhile, OneRepublic's 'Counting Stars' is the Official UK Singles Chart Number One
The sister trio are currently battling Justin Timberlake for the Number One slot in the Official UK Album Chart
The LA sisters are closing in fast on the pop star
It's 'Days Are Gone' vs 'The 20/20 Experience - 2 of 2' in race for the top spot
LA sibling's debut album 'Days Are Gone' is released today (September 30)
The band release their debut album 'Days Are Gone' today (September 30)
The love-in was mutual as the Prime Minister tweeted about the Californian band afterwards