News broke during Pharrell's slot on the new Apple radio service
The pair covered the 1984 classic in California
The band also shared a stage with their own parents at a benefit gig in Los Angeles
Este Haim celebrated her 29th birthday yesterday (March 14)
The collaboration will feature on the 'Insurgent' film soundtrack
LA group say 'it's hard to believe that any musician would do something like that to another band'
Band formed one-off super-group for US chat show host Jimmy Kimmel
Group were nominated for Best New Artist at last night's Grammys
Band rep confirms the singer is 'fine'
Band will join friend Swift for a select number of US dates later this year
Band tweeted photo of producer with caption 'Uh Ohz'
They performed 'Don't Save Me' in the BBC Radio 1 Live Lounge
Jamie T, London Grammar and Twin Atlantic also feature highly
The track is part of Bastille's forthcoming collaborative EP 'VS (Other People's Heartache Pt III)
Alana Haim uploads image showing Danielle Haim playing guitar
The four women joined forces for a feature in the New York Times
A$AP Ferg also appears in 'Dallas Murphy' US chat show spoof
LA trio will begin working on new album soon
Trio have been writing on the road
Musicians join footballers, athletes and film makers in showing off national strip